15-4z+3=12

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Solution for 15-4z+3=12 equation:


Simplifying
15 + -4z + 3 = 12

Reorder the terms:
15 + 3 + -4z = 12

Combine like terms: 15 + 3 = 18
18 + -4z = 12

Solving
18 + -4z = 12

Solving for variable 'z'.

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

Add '-18' to each side of the equation.
18 + -18 + -4z = 12 + -18

Combine like terms: 18 + -18 = 0
0 + -4z = 12 + -18
-4z = 12 + -18

Combine like terms: 12 + -18 = -6
-4z = -6

Divide each side by '-4'.
z = 1.5

Simplifying
z = 1.5

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