4+9z=7z

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Solution for 4+9z=7z equation:


Simplifying
4 + 9z = 7z

Solving
4 + 9z = 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 + 9z + -7z = 7z + -7z

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

Combine like terms: 7z + -7z = 0
4 + 2z = 0

Add '-4' to each side of the equation.
4 + -4 + 2z = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 2z = 0 + -4
2z = 0 + -4

Combine like terms: 0 + -4 = -4
2z = -4

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

Simplifying
z = -2

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