15x+7=-3x

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


Simplifying
15x + 7 = -3x

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

Solving
7 + 15x = -3x

Solving for variable 'x'.

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

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

Combine like terms: 15x + 3x = 18x
7 + 18x = -3x + 3x

Combine like terms: -3x + 3x = 0
7 + 18x = 0

Add '-7' to each side of the equation.
7 + -7 + 18x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 18x = 0 + -7
18x = 0 + -7

Combine like terms: 0 + -7 = -7
18x = -7

Divide each side by '18'.
x = -0.3888888889

Simplifying
x = -0.3888888889

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