(-7z-8)-(z+2)=-15z-87

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Solution for (-7z-8)-(z+2)=-15z-87 equation:


Simplifying
(-7z + -8) + -1(z + 2) = -15z + -87

Reorder the terms:
(-8 + -7z) + -1(z + 2) = -15z + -87

Remove parenthesis around (-8 + -7z)
-8 + -7z + -1(z + 2) = -15z + -87

Reorder the terms:
-8 + -7z + -1(2 + z) = -15z + -87
-8 + -7z + (2 * -1 + z * -1) = -15z + -87
-8 + -7z + (-2 + -1z) = -15z + -87

Reorder the terms:
-8 + -2 + -7z + -1z = -15z + -87

Combine like terms: -8 + -2 = -10
-10 + -7z + -1z = -15z + -87

Combine like terms: -7z + -1z = -8z
-10 + -8z = -15z + -87

Reorder the terms:
-10 + -8z = -87 + -15z

Solving
-10 + -8z = -87 + -15z

Solving for variable 'z'.

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

Add '15z' to each side of the equation.
-10 + -8z + 15z = -87 + -15z + 15z

Combine like terms: -8z + 15z = 7z
-10 + 7z = -87 + -15z + 15z

Combine like terms: -15z + 15z = 0
-10 + 7z = -87 + 0
-10 + 7z = -87

Add '10' to each side of the equation.
-10 + 10 + 7z = -87 + 10

Combine like terms: -10 + 10 = 0
0 + 7z = -87 + 10
7z = -87 + 10

Combine like terms: -87 + 10 = -77
7z = -77

Divide each side by '7'.
z = -11

Simplifying
z = -11

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