9(z-1)-2(3z)+4=7

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Solution for 9(z-1)-2(3z)+4=7 equation:


Simplifying
9(z + -1) + -2(3z) + 4 = 7

Reorder the terms:
9(-1 + z) + -2(3z) + 4 = 7
(-1 * 9 + z * 9) + -2(3z) + 4 = 7
(-9 + 9z) + -2(3z) + 4 = 7

Remove parenthesis around (3z)
-9 + 9z + -2 * 3z + 4 = 7

Multiply -2 * 3
-9 + 9z + -6z + 4 = 7

Reorder the terms:
-9 + 4 + 9z + -6z = 7

Combine like terms: -9 + 4 = -5
-5 + 9z + -6z = 7

Combine like terms: 9z + -6z = 3z
-5 + 3z = 7

Solving
-5 + 3z = 7

Solving for variable 'z'.

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

Add '5' to each side of the equation.
-5 + 5 + 3z = 7 + 5

Combine like terms: -5 + 5 = 0
0 + 3z = 7 + 5
3z = 7 + 5

Combine like terms: 7 + 5 = 12
3z = 12

Divide each side by '3'.
z = 4

Simplifying
z = 4

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