What is the answer to 2x+7+5x-7=4x+9 ?

The answer to 2x+7+5x-7=4x+9 is x=3

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2x+7+5x-7=4x+9

2 x + 7 + 5 x - 7 = 4 x + 9

x = 3

Solution steps

2 x + 7 + 5 x - 7 = 4 x + 9

Group like terms

2 x + 5 x + 7 - 7 = 4 x + 9

Add similar elements:

2 x + 5 x = 7 x

7 x + 7 - 7 = 4 x + 9

7 - 7 = 0

7 x = 4 x + 9

Move

4 x

to the left side

3 x = 9

Divide both sides by

3

x = 3

3 (m - 1) = 5 m + 3 - 2 m

t, V = V_{0} + a t

a, \frac{2 ab}{162} = 64

14 x + 70 + 20 x + 8 = 180

4 (x - 4) = 2 (x - 3)