7x-3=x+15

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Solution for 7x-3=x+15 equation:


Simplifying
7x + -3 = x + 15

Reorder the terms:
-3 + 7x = x + 15

Reorder the terms:
-3 + 7x = 15 + x

Solving
-3 + 7x = 15 + x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
-3 + 7x + -1x = 15 + x + -1x

Combine like terms: 7x + -1x = 6x
-3 + 6x = 15 + x + -1x

Combine like terms: x + -1x = 0
-3 + 6x = 15 + 0
-3 + 6x = 15

Add '3' to each side of the equation.
-3 + 3 + 6x = 15 + 3

Combine like terms: -3 + 3 = 0
0 + 6x = 15 + 3
6x = 15 + 3

Combine like terms: 15 + 3 = 18
6x = 18

Divide each side by '6'.
x = 3

Simplifying
x = 3

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