-15+9=z+7

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Solution for -15+9=z+7 equation:


Simplifying
-15 + 9 = z + 7

Combine like terms: -15 + 9 = -6
-6 = z + 7

Reorder the terms:
-6 = 7 + z

Solving
-6 = 7 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
-6 + -1z = 7 + z + -1z

Combine like terms: z + -1z = 0
-6 + -1z = 7 + 0
-6 + -1z = 7

Add '6' to each side of the equation.
-6 + 6 + -1z = 7 + 6

Combine like terms: -6 + 6 = 0
0 + -1z = 7 + 6
-1z = 7 + 6

Combine like terms: 7 + 6 = 13
-1z = 13

Divide each side by '-1'.
z = -13

Simplifying
z = -13

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