-4z-7+12z=31-12

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Solution for -4z-7+12z=31-12 equation:


Simplifying
-4z + -7 + 12z = 31 + -12

Reorder the terms:
-7 + -4z + 12z = 31 + -12

Combine like terms: -4z + 12z = 8z
-7 + 8z = 31 + -12

Combine like terms: 31 + -12 = 19
-7 + 8z = 19

Solving
-7 + 8z = 19

Solving for variable 'z'.

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

Add '7' to each side of the equation.
-7 + 7 + 8z = 19 + 7

Combine like terms: -7 + 7 = 0
0 + 8z = 19 + 7
8z = 19 + 7

Combine like terms: 19 + 7 = 26
8z = 26

Divide each side by '8'.
z = 3.25

Simplifying
z = 3.25

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