20-6(7z-19)=-20-16z-15z

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Solution for 20-6(7z-19)=-20-16z-15z equation:


Simplifying
20 + -6(7z + -19) = -20 + -16z + -15z

Reorder the terms:
20 + -6(-19 + 7z) = -20 + -16z + -15z
20 + (-19 * -6 + 7z * -6) = -20 + -16z + -15z
20 + (114 + -42z) = -20 + -16z + -15z

Combine like terms: 20 + 114 = 134
134 + -42z = -20 + -16z + -15z

Combine like terms: -16z + -15z = -31z
134 + -42z = -20 + -31z

Solving
134 + -42z = -20 + -31z

Solving for variable 'z'.

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

Add '31z' to each side of the equation.
134 + -42z + 31z = -20 + -31z + 31z

Combine like terms: -42z + 31z = -11z
134 + -11z = -20 + -31z + 31z

Combine like terms: -31z + 31z = 0
134 + -11z = -20 + 0
134 + -11z = -20

Add '-134' to each side of the equation.
134 + -134 + -11z = -20 + -134

Combine like terms: 134 + -134 = 0
0 + -11z = -20 + -134
-11z = -20 + -134

Combine like terms: -20 + -134 = -154
-11z = -154

Divide each side by '-11'.
z = 14

Simplifying
z = 14

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