(12z+7)-(5z-4)=

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Solution for (12z+7)-(5z-4)= equation:


Simplifying
(12z + 7) + -1(5z + -4) = 0

Reorder the terms:
(7 + 12z) + -1(5z + -4) = 0

Remove parenthesis around (7 + 12z)
7 + 12z + -1(5z + -4) = 0

Reorder the terms:
7 + 12z + -1(-4 + 5z) = 0
7 + 12z + (-4 * -1 + 5z * -1) = 0
7 + 12z + (4 + -5z) = 0

Reorder the terms:
7 + 4 + 12z + -5z = 0

Combine like terms: 7 + 4 = 11
11 + 12z + -5z = 0

Combine like terms: 12z + -5z = 7z
11 + 7z = 0

Solving
11 + 7z = 0

Solving for variable 'z'.

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

Add '-11' to each side of the equation.
11 + -11 + 7z = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 7z = 0 + -11
7z = 0 + -11

Combine like terms: 0 + -11 = -11
7z = -11

Divide each side by '7'.
z = -1.571428571

Simplifying
z = -1.571428571

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