7(-6+3z)=42

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Solution for 7(-6+3z)=42 equation: 


Simplifying
7(-6 + 3z) = 42
(-6 * 7 + 3z * 7) = 42
(-42 + 21z) = 42

Solving
-42 + 21z = 42

Solving for variable 'z'.

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

Add '42' to each side of the equation.
-42 + 42 + 21z = 42 + 42

Combine like terms: -42 + 42 = 0
0 + 21z = 42 + 42
21z = 42 + 42

Combine like terms: 42 + 42 = 84
21z = 84

Divide each side by '21'.
z = 4

Simplifying
z = 4

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