5z+7(9z-3)=115

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Solution for 5z+7(9z-3)=115 equation:


Simplifying
5z + 7(9z + -3) = 115

Reorder the terms:
5z + 7(-3 + 9z) = 115
5z + (-3 * 7 + 9z * 7) = 115
5z + (-21 + 63z) = 115

Reorder the terms:
-21 + 5z + 63z = 115

Combine like terms: 5z + 63z = 68z
-21 + 68z = 115

Solving
-21 + 68z = 115

Solving for variable 'z'.

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

Add '21' to each side of the equation.
-21 + 21 + 68z = 115 + 21

Combine like terms: -21 + 21 = 0
0 + 68z = 115 + 21
68z = 115 + 21

Combine like terms: 115 + 21 = 136
68z = 136

Divide each side by '68'.
z = 2

Simplifying
z = 2

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