12x-3(5+4x)=7x+20

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Solution for 12x-3(5+4x)=7x+20 equation:


Simplifying
12x + -3(5 + 4x) = 7x + 20
12x + (5 * -3 + 4x * -3) = 7x + 20
12x + (-15 + -12x) = 7x + 20

Reorder the terms:
-15 + 12x + -12x = 7x + 20

Combine like terms: 12x + -12x = 0
-15 + 0 = 7x + 20
-15 = 7x + 20

Reorder the terms:
-15 = 20 + 7x

Solving
-15 = 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 + -7x = 20 + 7x + -7x

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

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

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

Combine like terms: 20 + 15 = 35
-7x = 35

Divide each side by '-7'.
x = -5

Simplifying
x = -5

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