3(4z+9)=20-7z

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Solution for 3(4z+9)=20-7z equation:


Simplifying
3(4z + 9) = 20 + -7z

Reorder the terms:
3(9 + 4z) = 20 + -7z
(9 * 3 + 4z * 3) = 20 + -7z
(27 + 12z) = 20 + -7z

Solving
27 + 12z = 20 + -7z

Solving for variable 'z'.

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

Add '7z' to each side of the equation.
27 + 12z + 7z = 20 + -7z + 7z

Combine like terms: 12z + 7z = 19z
27 + 19z = 20 + -7z + 7z

Combine like terms: -7z + 7z = 0
27 + 19z = 20 + 0
27 + 19z = 20

Add '-27' to each side of the equation.
27 + -27 + 19z = 20 + -27

Combine like terms: 27 + -27 = 0
0 + 19z = 20 + -27
19z = 20 + -27

Combine like terms: 20 + -27 = -7
19z = -7

Divide each side by '19'.
z = -0.3684210526

Simplifying
z = -0.3684210526

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