What is the answer to 8w-8-6w=4w-7 ?

The answer to 8w-8-6w=4w-7 is w=-1/2

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8w-8-6w=4w-7

8 w - 8 - 6 w = 4 w - 7

w = - \frac{1}{2}

Decimal Notation

w = - 0.5

Solution steps

8 w - 8 - 6 w = 4 w - 7

Group like terms

8 w - 6 w - 8 = 4 w - 7

Add similar elements:

8 w - 6 w = 2 w

2 w - 8 = 4 w - 7

Move

8

to the right side

2 w = 4 w + 1

Move

4 w

to the left side

- 2 w = 1

Divide both sides by

- 2

w = - \frac{1}{2}

a x - b = c x + d

2 x = 90

x, 2 x + y = 40

x, 2 x + y = 21

15 = 9 - 3 a