15-3x=7x+20

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Solution for 15-3x=7x+20 equation:


Simplifying
15 + -3x = 7x + 20

Reorder the terms:
15 + -3x = 20 + 7x

Solving
15 + -3x = 20 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
15 + -3x + -7x = 20 + 7x + -7x

Combine like terms: -3x + -7x = -10x
15 + -10x = 20 + 7x + -7x

Combine like terms: 7x + -7x = 0
15 + -10x = 20 + 0
15 + -10x = 20

Add '-15' to each side of the equation.
15 + -15 + -10x = 20 + -15

Combine like terms: 15 + -15 = 0
0 + -10x = 20 + -15
-10x = 20 + -15

Combine like terms: 20 + -15 = 5
-10x = 5

Divide each side by '-10'.
x = -0.5

Simplifying
x = -0.5

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