9(z-1)=7z-4

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Solution for 9(z-1)=7z-4 equation:


Simplifying
9(z + -1) = 7z + -4

Reorder the terms:
9(-1 + z) = 7z + -4
(-1 * 9 + z * 9) = 7z + -4
(-9 + 9z) = 7z + -4

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

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

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

Combine like terms: 7z + -7z = 0
-9 + 2z = -4 + 0
-9 + 2z = -4

Add '9' to each side of the equation.
-9 + 9 + 2z = -4 + 9

Combine like terms: -9 + 9 = 0
0 + 2z = -4 + 9
2z = -4 + 9

Combine like terms: -4 + 9 = 5
2z = 5

Divide each side by '2'.
z = 2.5

Simplifying
z = 2.5

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