-18=z+21+7

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Solution for -18=z+21+7 equation:


Simplifying
-18 = z + 21 + 7

Reorder the terms:
-18 = 21 + 7 + z

Combine like terms: 21 + 7 = 28
-18 = 28 + z

Solving
-18 = 28 + 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.
-18 + -1z = 28 + z + -1z

Combine like terms: z + -1z = 0
-18 + -1z = 28 + 0
-18 + -1z = 28

Add '18' to each side of the equation.
-18 + 18 + -1z = 28 + 18

Combine like terms: -18 + 18 = 0
0 + -1z = 28 + 18
-1z = 28 + 18

Combine like terms: 28 + 18 = 46
-1z = 46

Divide each side by '-1'.
z = -46

Simplifying
z = -46

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