3-15=-4z

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Solution for 3-15=-4z equation:


Simplifying
3 + -15 = -4z

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

Solving
-12 = -4z

Solving for variable 'z'.

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

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

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

Add '12' to each side of the equation.
-12 + 12 + 4z = 0 + 12

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

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

Divide each side by '4'.
z = 3

Simplifying
z = 3

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