10(z+7)=9z

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Solution for 10(z+7)=9z equation:


Simplifying
10(z + 7) = 9z

Reorder the terms:
10(7 + z) = 9z
(7 * 10 + z * 10) = 9z
(70 + 10z) = 9z

Solving
70 + 10z = 9z

Solving for variable 'z'.

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

Add '-9z' to each side of the equation.
70 + 10z + -9z = 9z + -9z

Combine like terms: 10z + -9z = 1z
70 + 1z = 9z + -9z

Combine like terms: 9z + -9z = 0
70 + 1z = 0

Add '-70' to each side of the equation.
70 + -70 + 1z = 0 + -70

Combine like terms: 70 + -70 = 0
0 + 1z = 0 + -70
1z = 0 + -70

Combine like terms: 0 + -70 = -70
1z = -70

Divide each side by '1'.
z = -70

Simplifying
z = -70

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