13+7=32-z

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Solution for 13+7=32-z equation:


Simplifying
13 + 7 = 32 + -1z

Combine like terms: 13 + 7 = 20
20 = 32 + -1z

Solving
20 = 32 + -1z

Solving for variable 'z'.

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

Add 'z' to each side of the equation.
20 + z = 32 + -1z + z

Combine like terms: -1z + z = 0
20 + z = 32 + 0
20 + z = 32

Add '-20' to each side of the equation.
20 + -20 + z = 32 + -20

Combine like terms: 20 + -20 = 0
0 + z = 32 + -20
z = 32 + -20

Combine like terms: 32 + -20 = 12
z = 12

Simplifying
z = 12

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