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

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


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

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

Reorder the terms:
1 + -3z + -2(9 + z) = 7(z + 1)
1 + -3z + (9 * -2 + z * -2) = 7(z + 1)
1 + -3z + (-18 + -2z) = 7(z + 1)

Reorder the terms:
1 + -18 + -3z + -2z = 7(z + 1)

Combine like terms: 1 + -18 = -17
-17 + -3z + -2z = 7(z + 1)

Combine like terms: -3z + -2z = -5z
-17 + -5z = 7(z + 1)

Reorder the terms:
-17 + -5z = 7(1 + z)
-17 + -5z = (1 * 7 + z * 7)
-17 + -5z = (7 + 7z)

Solving
-17 + -5z = 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.
-17 + -5z + -7z = 7 + 7z + -7z

Combine like terms: -5z + -7z = -12z
-17 + -12z = 7 + 7z + -7z

Combine like terms: 7z + -7z = 0
-17 + -12z = 7 + 0
-17 + -12z = 7

Add '17' to each side of the equation.
-17 + 17 + -12z = 7 + 17

Combine like terms: -17 + 17 = 0
0 + -12z = 7 + 17
-12z = 7 + 17

Combine like terms: 7 + 17 = 24
-12z = 24

Divide each side by '-12'.
z = -2

Simplifying
z = -2

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