-3(z+7)=9-2z

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Solution for -3(z+7)=9-2z equation:


Simplifying
-3(z + 7) = 9 + -2z

Reorder the terms:
-3(7 + z) = 9 + -2z
(7 * -3 + z * -3) = 9 + -2z
(-21 + -3z) = 9 + -2z

Solving
-21 + -3z = 9 + -2z

Solving for variable 'z'.

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

Add '2z' to each side of the equation.
-21 + -3z + 2z = 9 + -2z + 2z

Combine like terms: -3z + 2z = -1z
-21 + -1z = 9 + -2z + 2z

Combine like terms: -2z + 2z = 0
-21 + -1z = 9 + 0
-21 + -1z = 9

Add '21' to each side of the equation.
-21 + 21 + -1z = 9 + 21

Combine like terms: -21 + 21 = 0
0 + -1z = 9 + 21
-1z = 9 + 21

Combine like terms: 9 + 21 = 30
-1z = 30

Divide each side by '-1'.
z = -30

Simplifying
z = -30

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