7-85-2.15c=20.75

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Solution for 7-85-2.15c=20.75 equation:


Simplifying
7 + -85 + -2.15c = 20.75

Combine like terms: 7 + -85 = -78
-78 + -2.15c = 20.75

Solving
-78 + -2.15c = 20.75

Solving for variable 'c'.

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

Add '78' to each side of the equation.
-78 + 78 + -2.15c = 20.75 + 78

Combine like terms: -78 + 78 = 0
0 + -2.15c = 20.75 + 78
-2.15c = 20.75 + 78

Combine like terms: 20.75 + 78 = 98.75
-2.15c = 98.75

Divide each side by '-2.15'.
c = -45.93023256

Simplifying
c = -45.93023256

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