100=7c-30

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Solution for 100=7c-30 equation: 


Simplifying
100 = 7c + -30

Reorder the terms:
100 = -30 + 7c

Solving
100 = -30 + 7c

Solving for variable 'c'.

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

Add '-7c' to each side of the equation.
100 + -7c = -30 + 7c + -7c

Combine like terms: 7c + -7c = 0
100 + -7c = -30 + 0
100 + -7c = -30

Add '-100' to each side of the equation.
100 + -100 + -7c = -30 + -100

Combine like terms: 100 + -100 = 0
0 + -7c = -30 + -100
-7c = -30 + -100

Combine like terms: -30 + -100 = -130
-7c = -130

Divide each side by '-7'.
c = 18.57142857

Simplifying
c = 18.57142857

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