4(z+7)=80

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Solution for 4(z+7)=80 equation: 


Simplifying
4(z + 7) = 80

Reorder the terms:
4(7 + z) = 80
(7 * 4 + z * 4) = 80
(28 + 4z) = 80

Solving
28 + 4z = 80

Solving for variable 'z'.

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

Add '-28' to each side of the equation.
28 + -28 + 4z = 80 + -28

Combine like terms: 28 + -28 = 0
0 + 4z = 80 + -28
4z = 80 + -28

Combine like terms: 80 + -28 = 52
4z = 52

Divide each side by '4'.
z = 13

Simplifying
z = 13

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