7c+15=9c+40

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Solution for 7c+15=9c+40 equation:


Simplifying
7c + 15 = 9c + 40

Reorder the terms:
15 + 7c = 9c + 40

Reorder the terms:
15 + 7c = 40 + 9c

Solving
15 + 7c = 40 + 9c

Solving for variable 'c'.

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

Add '-9c' to each side of the equation.
15 + 7c + -9c = 40 + 9c + -9c

Combine like terms: 7c + -9c = -2c
15 + -2c = 40 + 9c + -9c

Combine like terms: 9c + -9c = 0
15 + -2c = 40 + 0
15 + -2c = 40

Add '-15' to each side of the equation.
15 + -15 + -2c = 40 + -15

Combine like terms: 15 + -15 = 0
0 + -2c = 40 + -15
-2c = 40 + -15

Combine like terms: 40 + -15 = 25
-2c = 25

Divide each side by '-2'.
c = -12.5

Simplifying
c = -12.5

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