e.g. The length of the 4 roads are:

**x km, x km, x-7 km, 6 km**Check:

e.g 1: In the example of lengths, x, x, x-8 and 7

values of x must be greater than 8, otherwise x-8 would not be valid (in this context)

e.g. 2: In the example of lengths, 0.25x, 0.75x, 1 and x-2

values of x must be at greater than 2, otherwise x-2 would not be valid (in this context)

~~~~~~~~~~~~~~~~

What's wrong with the following?

**x + x + (x - 7) + 6 = 3x - 1****~~~~~~~~~~~~~~~~~~```**Based on your posting in the comments:

The following are correct...**2x**,**x**,**x + 2**,**1- x****0.5x**,**x**,**x**,**0.5x - 1****0.25x**,**0.75x**,**1.25x**,**0.75x-1****x**,**x**,**x-8**,**7****0.25x**,**0.75x**,**1**,**x-2****0.75x**,**0.25x - 1**,**1.5x**,**0.5x****x-1**,**x**,**4/6 x**,**2/6 x**

e.g 1: In the example of lengths, x, x, x-8 and 7

values of x must be greater than 8, otherwise x-8 would not be valid (in this context)

e.g. 2: In the example of lengths, 0.25x, 0.75x, 1 and x-2

values of x must be at greater than 2, otherwise x-2 would not be valid (in this context)

~~~~~~~~~~~~~~~~

What's wrong with the following?

**2x-1**,**0.5x**,**0.25x**,**0.25****0.5x**,**0.5x**,**0.5x-1**,**1.5x****x**,**x**,**x**,**(-1)****2x, 0.5x, 0.5x, -1**-
**8**,**4x**,**-x**,**-7**

- The sum might not have added up to the given expression, 3x - 1
- The context (as length of road is a positive number)

x+x+x+(-1)

ReplyDelete-Ishani♛♠⚑♪

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ReplyDeleteThe possible length of the 4 roads are:

ReplyDelete2x km,1x km,1x km + 2km,1km-1x km

Check:2x km+1x km+1x km-1x km+2km-1km=(3x+1)km

ReplyDelete1/2 x , 1x, 1x, 1/2x - 1

ReplyDeleteCheck : 1/2x km + 1x km + 1x km + 1/2 x km -1 km = 3x-1km

((7x-1x)/2)-1

ReplyDeleteCheck: 7x-1x=6x

6x/2=3x

3x-1=(3x-1)

0.25x km,0.75x km,1.25x km,0.75x-1 km

ReplyDeleteCheck:0.25x km+0.75x km+1.25x km+(0.75x-1) km=(3x-1) km

xkm+xkm+x-8km+7km

ReplyDeletex + x + (x - 8) + 7 = 3x - 1

2x,0.5x,0.5x,-1km

ReplyDeleteCheck : 2x+0.5x+0.5x = 3x

3x+-1km = (3x-1)km

1/2 x , 1x, 1x, 1/2x - 1 (All are in Km)

ReplyDeleteCheck:1/2x km + 1x km + 1x km + 1/2 x km -1 km = 3x-1km

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ReplyDelete(3/4x)km, (1/4x-1)km, (1 1/2x)km, (1/2x)km

ReplyDeleteCheck: (3/4x)km+(1/4x-1)km+(1 1/2x)km+(1/2x)km=(3x-1)km

1/2 X km,1/2 X km,1/2 X -1km,1 1/2 X km

ReplyDeleteCheck:1/2X km+1/2 X km+(1/2 X -1)km+1 1/2 X km=(3x-1)km

(3x - 1) km

ReplyDeleteThe length of the 4 roads are: 8 km, 4x km, (-x) km, (-7)km

Check: 8+4x+(-x)+(-7)= 3x-1

X km-1km, X km, 4/6 X km, 2/6 X km

ReplyDeleteCheck: (X km-1km)+X km+4/6 X km+2/6 X k= (3x-1)km

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ReplyDelete2x km- 1 km, 1/2x km, 1/4x km, 1/4 km

ReplyDeleteCheck: (2x km-1 km) + 1/2x km +1/4x km + 1/4x km= 3x km-1 km

x, 2x-9km, 4km, 4km

ReplyDeleteCheck: x + 2x-9km + 4km + 4km = 3x-1km

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ReplyDeleteThe length of the 4 roads are: x km, x - 11 km, x + 9km, 1 km

ReplyDeleteCheck: x + (x-11) + (x+9) + 1 = 3x - 1

1. (x-9)km, 6km, 2km, 2x.

ReplyDelete2x+(x-9)km+6km+2km = (3x-1)km

(-x)+(2x)+(x+8)+(x-9)

ReplyDelete-x-2x+4x+24+x-25

ReplyDelete1/4x , 3/4x, 1, (2x-2)

ReplyDeleteCheck: 1/4x+3/4x+1+(2x-2) = (3-1)km

Answer : (x -10)km , x km , (x + 6)km , 3km

ReplyDeleteCheck : x km + ( x- 10)km + ( x + 6)km + 3km= ( 2x-10) + ( x + 6)km+ 3km = ( 3x-4)km+ 3km = (3x-1)km.