90+C=30

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Solution for 90+C=30 equation: 


Simplifying
90 + C = 30

Solving
90 + C = 30

Solving for variable 'C'.

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

Add '-90' to each side of the equation.
90 + -90 + C = 30 + -90

Combine like terms: 90 + -90 = 0
0 + C = 30 + -90
C = 30 + -90

Combine like terms: 30 + -90 = -60
C = -60

Simplifying
C = -60

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