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

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


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

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

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

Remove parenthesis around (1 + 3z)
-9 + -1z + 1 + 3z = -7(z + 1)

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

Combine like terms: -9 + 1 = -8
-8 + -1z + 3z = -7(z + 1)

Combine like terms: -1z + 3z = 2z
-8 + 2z = -7(z + 1)

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

Solving
-8 + 2z = -7 + -7z

Solving for variable 'z'.

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

Add '7z' to each side of the equation.
-8 + 2z + 7z = -7 + -7z + 7z

Combine like terms: 2z + 7z = 9z
-8 + 9z = -7 + -7z + 7z

Combine like terms: -7z + 7z = 0
-8 + 9z = -7 + 0
-8 + 9z = -7

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

Combine like terms: -8 + 8 = 0
0 + 9z = -7 + 8
9z = -7 + 8

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

Divide each side by '9'.
z = 0.1111111111

Simplifying
z = 0.1111111111

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