12(90-C)+8C=980

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Solution for 12(90-C)+8C=980 equation:


Simplifying
12(90 + -1C) + 8C = 980
(90 * 12 + -1C * 12) + 8C = 980
(1080 + -12C) + 8C = 980

Combine like terms: -12C + 8C = -4C
1080 + -4C = 980

Solving
1080 + -4C = 980

Solving for variable 'C'.

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

Add '-1080' to each side of the equation.
1080 + -1080 + -4C = 980 + -1080

Combine like terms: 1080 + -1080 = 0
0 + -4C = 980 + -1080
-4C = 980 + -1080

Combine like terms: 980 + -1080 = -100
-4C = -100

Divide each side by '-4'.
C = 25

Simplifying
C = 25

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