4(3z+10)=5z-9

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Solution for 4(3z+10)=5z-9 equation:


Simplifying
4(3z + 10) = 5z + -9

Reorder the terms:
4(10 + 3z) = 5z + -9
(10 * 4 + 3z * 4) = 5z + -9
(40 + 12z) = 5z + -9

Reorder the terms:
40 + 12z = -9 + 5z

Solving
40 + 12z = -9 + 5z

Solving for variable 'z'.

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

Add '-5z' to each side of the equation.
40 + 12z + -5z = -9 + 5z + -5z

Combine like terms: 12z + -5z = 7z
40 + 7z = -9 + 5z + -5z

Combine like terms: 5z + -5z = 0
40 + 7z = -9 + 0
40 + 7z = -9

Add '-40' to each side of the equation.
40 + -40 + 7z = -9 + -40

Combine like terms: 40 + -40 = 0
0 + 7z = -9 + -40
7z = -9 + -40

Combine like terms: -9 + -40 = -49
7z = -49

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

Simplifying
z = -7

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