7(z-9)-(8z-6)=-16z

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Solution for 7(z-9)-(8z-6)=-16z equation:


Simplifying
7(z + -9) + -1(8z + -6) = -16z

Reorder the terms:
7(-9 + z) + -1(8z + -6) = -16z
(-9 * 7 + z * 7) + -1(8z + -6) = -16z
(-63 + 7z) + -1(8z + -6) = -16z

Reorder the terms:
-63 + 7z + -1(-6 + 8z) = -16z
-63 + 7z + (-6 * -1 + 8z * -1) = -16z
-63 + 7z + (6 + -8z) = -16z

Reorder the terms:
-63 + 6 + 7z + -8z = -16z

Combine like terms: -63 + 6 = -57
-57 + 7z + -8z = -16z

Combine like terms: 7z + -8z = -1z
-57 + -1z = -16z

Solving
-57 + -1z = -16z

Solving for variable 'z'.

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

Add '16z' to each side of the equation.
-57 + -1z + 16z = -16z + 16z

Combine like terms: -1z + 16z = 15z
-57 + 15z = -16z + 16z

Combine like terms: -16z + 16z = 0
-57 + 15z = 0

Add '57' to each side of the equation.
-57 + 57 + 15z = 0 + 57

Combine like terms: -57 + 57 = 0
0 + 15z = 0 + 57
15z = 0 + 57

Combine like terms: 0 + 57 = 57
15z = 57

Divide each side by '15'.
z = 3.8

Simplifying
z = 3.8

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