30=-c+20

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Solution for 30=-c+20 equation:


Simplifying
30 = -1c + 20

Reorder the terms:
30 = 20 + -1c

Solving
30 = 20 + -1c

Solving for variable 'c'.

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

Add 'c' to each side of the equation.
30 + c = 20 + -1c + c

Combine like terms: -1c + c = 0
30 + c = 20 + 0
30 + c = 20

Add '-30' to each side of the equation.
30 + -30 + c = 20 + -30

Combine like terms: 30 + -30 = 0
0 + c = 20 + -30
c = 20 + -30

Combine like terms: 20 + -30 = -10
c = -10

Simplifying
c = -10

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