-4(15+5z)=60

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Solution for -4(15+5z)=60 equation: 


Simplifying
-4(15 + 5z) = 60
(15 * -4 + 5z * -4) = 60
(-60 + -20z) = 60

Solving
-60 + -20z = 60

Solving for variable 'z'.

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

Add '60' to each side of the equation.
-60 + 60 + -20z = 60 + 60

Combine like terms: -60 + 60 = 0
0 + -20z = 60 + 60
-20z = 60 + 60

Combine like terms: 60 + 60 = 120
-20z = 120

Divide each side by '-20'.
z = -6

Simplifying
z = -6

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