3x+20=15x-64

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Solution for 3x+20=15x-64 equation:


Simplifying
3x + 20 = 15x + -64

Reorder the terms:
20 + 3x = 15x + -64

Reorder the terms:
20 + 3x = -64 + 15x

Solving
20 + 3x = -64 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
20 + 3x + -15x = -64 + 15x + -15x

Combine like terms: 3x + -15x = -12x
20 + -12x = -64 + 15x + -15x

Combine like terms: 15x + -15x = 0
20 + -12x = -64 + 0
20 + -12x = -64

Add '-20' to each side of the equation.
20 + -20 + -12x = -64 + -20

Combine like terms: 20 + -20 = 0
0 + -12x = -64 + -20
-12x = -64 + -20

Combine like terms: -64 + -20 = -84
-12x = -84

Divide each side by '-12'.
x = 7

Simplifying
x = 7

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