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

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


Simplifying
4(3z + -1z) = 9z + -7

Combine like terms: 3z + -1z = 2z
4(2z) = 9z + -7

Remove parenthesis around (2z)
4 * 2z = 9z + -7

Multiply 4 * 2
8z = 9z + -7

Reorder the terms:
8z = -7 + 9z

Solving
8z = -7 + 9z

Solving for variable 'z'.

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

Add '-9z' to each side of the equation.
8z + -9z = -7 + 9z + -9z

Combine like terms: 8z + -9z = -1z
-1z = -7 + 9z + -9z

Combine like terms: 9z + -9z = 0
-1z = -7 + 0
-1z = -7

Divide each side by '-1'.
z = 7

Simplifying
z = 7

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