What is the answer to 3+4x+x=2x+15 ?

The answer to 3+4x+x=2x+15 is x=4

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3+4x+x=2x+15

3 + 4 x + x = 2 x + 15

x = 4

Solution steps

3 + 4 x + x = 2 x + 15

Add similar elements:

4 x + x = 5 x

3 + 5 x = 2 x + 15

Move

3

to the right side

5 x = 2 x + 12

Move

2 x

to the left side

3 x = 12

Divide both sides by

3

x = 4

\frac{- x}{7} = \frac{8 x}{9}

50 + 80 + 6 x + 8 = 180

6 x - 3 (x - 1) = 4 + 5 x

3 - \frac{x}{2} = 6

- \frac{x}{5} - 37 = - 18