20=3x+4(-3x-13)

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Solution for 20=3x+4(-3x-13) equation:


Simplifying
20 = 3x + 4(-3x + -13)

Reorder the terms:
20 = 3x + 4(-13 + -3x)
20 = 3x + (-13 * 4 + -3x * 4)
20 = 3x + (-52 + -12x)

Reorder the terms:
20 = -52 + 3x + -12x

Combine like terms: 3x + -12x = -9x
20 = -52 + -9x

Solving
20 = -52 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
20 + 9x = -52 + -9x + 9x

Combine like terms: -9x + 9x = 0
20 + 9x = -52 + 0
20 + 9x = -52

Add '-20' to each side of the equation.
20 + -20 + 9x = -52 + -20

Combine like terms: 20 + -20 = 0
0 + 9x = -52 + -20
9x = -52 + -20

Combine like terms: -52 + -20 = -72
9x = -72

Divide each side by '9'.
x = -8

Simplifying
x = -8

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