-9(z+5)-(-7z-7)=3z

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Solution for -9(z+5)-(-7z-7)=3z equation:


Simplifying
-9(z + 5) + -1(-7z + -7) = 3z

Reorder the terms:
-9(5 + z) + -1(-7z + -7) = 3z
(5 * -9 + z * -9) + -1(-7z + -7) = 3z
(-45 + -9z) + -1(-7z + -7) = 3z

Reorder the terms:
-45 + -9z + -1(-7 + -7z) = 3z
-45 + -9z + (-7 * -1 + -7z * -1) = 3z
-45 + -9z + (7 + 7z) = 3z

Reorder the terms:
-45 + 7 + -9z + 7z = 3z

Combine like terms: -45 + 7 = -38
-38 + -9z + 7z = 3z

Combine like terms: -9z + 7z = -2z
-38 + -2z = 3z

Solving
-38 + -2z = 3z

Solving for variable 'z'.

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

Add '-3z' to each side of the equation.
-38 + -2z + -3z = 3z + -3z

Combine like terms: -2z + -3z = -5z
-38 + -5z = 3z + -3z

Combine like terms: 3z + -3z = 0
-38 + -5z = 0

Add '38' to each side of the equation.
-38 + 38 + -5z = 0 + 38

Combine like terms: -38 + 38 = 0
0 + -5z = 0 + 38
-5z = 0 + 38

Combine like terms: 0 + 38 = 38
-5z = 38

Divide each side by '-5'.
z = -7.6

Simplifying
z = -7.6

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