9z+4-7z=40-7z

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Solution for 9z+4-7z=40-7z equation:


Simplifying
9z + 4 + -7z = 40 + -7z

Reorder the terms:
4 + 9z + -7z = 40 + -7z

Combine like terms: 9z + -7z = 2z
4 + 2z = 40 + -7z

Solving
4 + 2z = 40 + -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.
4 + 2z + 7z = 40 + -7z + 7z

Combine like terms: 2z + 7z = 9z
4 + 9z = 40 + -7z + 7z

Combine like terms: -7z + 7z = 0
4 + 9z = 40 + 0
4 + 9z = 40

Add '-4' to each side of the equation.
4 + -4 + 9z = 40 + -4

Combine like terms: 4 + -4 = 0
0 + 9z = 40 + -4
9z = 40 + -4

Combine like terms: 40 + -4 = 36
9z = 36

Divide each side by '9'.
z = 4

Simplifying
z = 4

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