9-7(1-8z)=30

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Solution for 9-7(1-8z)=30 equation:


Simplifying
9 + -7(1 + -8z) = 30
9 + (1 * -7 + -8z * -7) = 30
9 + (-7 + 56z) = 30

Combine like terms: 9 + -7 = 2
2 + 56z = 30

Solving
2 + 56z = 30

Solving for variable 'z'.

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

Add '-2' to each side of the equation.
2 + -2 + 56z = 30 + -2

Combine like terms: 2 + -2 = 0
0 + 56z = 30 + -2
56z = 30 + -2

Combine like terms: 30 + -2 = 28
56z = 28

Divide each side by '56'.
z = 0.5

Simplifying
z = 0.5

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