9z+15=7z-25+4z

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Solution for 9z+15=7z-25+4z equation:


Simplifying
9z + 15 = 7z + -25 + 4z

Reorder the terms:
15 + 9z = 7z + -25 + 4z

Reorder the terms:
15 + 9z = -25 + 7z + 4z

Combine like terms: 7z + 4z = 11z
15 + 9z = -25 + 11z

Solving
15 + 9z = -25 + 11z

Solving for variable 'z'.

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

Add '-11z' to each side of the equation.
15 + 9z + -11z = -25 + 11z + -11z

Combine like terms: 9z + -11z = -2z
15 + -2z = -25 + 11z + -11z

Combine like terms: 11z + -11z = 0
15 + -2z = -25 + 0
15 + -2z = -25

Add '-15' to each side of the equation.
15 + -15 + -2z = -25 + -15

Combine like terms: 15 + -15 = 0
0 + -2z = -25 + -15
-2z = -25 + -15

Combine like terms: -25 + -15 = -40
-2z = -40

Divide each side by '-2'.
z = 20

Simplifying
z = 20

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