What is the answer to -5+7m-20=20-2m ?

The answer to -5+7m-20=20-2m is m=5

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-5+7m-20=20-2m

- 5 + 7 m - 20 = 20 - 2 m

m = 5

Solution steps

- 5 + 7 m - 20 = 20 - 2 m

Group like terms

7 m - 5 - 20 = 20 - 2 m

Subtract the numbers:

- 5 - 20 = - 25

7 m - 25 = 20 - 2 m

Move

25

to the right side

7 m = - 2 m + 45

Move

2 m

to the left side

9 m = 45

Divide both sides by

9

m = 5

3 y - \frac{1}{2} = y (- 1 + \frac{7}{9}) + \frac{1}{2} y

12 z = 108

3 x - 5 = 9

x, 5 x + 6 y - 9 = 0

3 x - 2 = 2