-81(1-3c)=40

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Solution for -81(1-3c)=40 equation:


Simplifying
-81(1 + -3c) = 40
(1 * -81 + -3c * -81) = 40
(-81 + 243c) = 40

Solving
-81 + 243c = 40

Solving for variable 'c'.

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

Add '81' to each side of the equation.
-81 + 81 + 243c = 40 + 81

Combine like terms: -81 + 81 = 0
0 + 243c = 40 + 81
243c = 40 + 81

Combine like terms: 40 + 81 = 121
243c = 121

Divide each side by '243'.
c = 0.4979423868

Simplifying
c = 0.4979423868

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