-20=3x+7(2x-15)

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Solution for -20=3x+7(2x-15) equation:


Simplifying
-20 = 3x + 7(2x + -15)

Reorder the terms:
-20 = 3x + 7(-15 + 2x)
-20 = 3x + (-15 * 7 + 2x * 7)
-20 = 3x + (-105 + 14x)

Reorder the terms:
-20 = -105 + 3x + 14x

Combine like terms: 3x + 14x = 17x
-20 = -105 + 17x

Solving
-20 = -105 + 17x

Solving for variable 'x'.

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

Add '-17x' to each side of the equation.
-20 + -17x = -105 + 17x + -17x

Combine like terms: 17x + -17x = 0
-20 + -17x = -105 + 0
-20 + -17x = -105

Add '20' to each side of the equation.
-20 + 20 + -17x = -105 + 20

Combine like terms: -20 + 20 = 0
0 + -17x = -105 + 20
-17x = -105 + 20

Combine like terms: -105 + 20 = -85
-17x = -85

Divide each side by '-17'.
x = 5

Simplifying
x = 5

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