-3(z+7)=4z

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Solution for -3(z+7)=4z equation:


Simplifying
-3(z + 7) = 4z

Reorder the terms:
-3(7 + z) = 4z
(7 * -3 + z * -3) = 4z
(-21 + -3z) = 4z

Solving
-21 + -3z = 4z

Solving for variable 'z'.

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

Add '-4z' to each side of the equation.
-21 + -3z + -4z = 4z + -4z

Combine like terms: -3z + -4z = -7z
-21 + -7z = 4z + -4z

Combine like terms: 4z + -4z = 0
-21 + -7z = 0

Add '21' to each side of the equation.
-21 + 21 + -7z = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -7z = 0 + 21
-7z = 0 + 21

Combine like terms: 0 + 21 = 21
-7z = 21

Divide each side by '-7'.
z = -3

Simplifying
z = -3

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