-21-(3c-8)=.25(c+13)

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Solution for -21-(3c-8)=.25(c+13) equation:


Simplifying
-21 + -1(3c + -8) = 0.25(c + 13)

Reorder the terms:
-21 + -1(-8 + 3c) = 0.25(c + 13)
-21 + (-8 * -1 + 3c * -1) = 0.25(c + 13)
-21 + (8 + -3c) = 0.25(c + 13)

Combine like terms: -21 + 8 = -13
-13 + -3c = 0.25(c + 13)

Reorder the terms:
-13 + -3c = 0.25(13 + c)
-13 + -3c = (13 * 0.25 + c * 0.25)
-13 + -3c = (3.25 + 0.25c)

Solving
-13 + -3c = 3.25 + 0.25c

Solving for variable 'c'.

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

Add '-0.25c' to each side of the equation.
-13 + -3c + -0.25c = 3.25 + 0.25c + -0.25c

Combine like terms: -3c + -0.25c = -3.25c
-13 + -3.25c = 3.25 + 0.25c + -0.25c

Combine like terms: 0.25c + -0.25c = 0.00
-13 + -3.25c = 3.25 + 0.00
-13 + -3.25c = 3.25

Add '13' to each side of the equation.
-13 + 13 + -3.25c = 3.25 + 13

Combine like terms: -13 + 13 = 0
0 + -3.25c = 3.25 + 13
-3.25c = 3.25 + 13

Combine like terms: 3.25 + 13 = 16.25
-3.25c = 16.25

Divide each side by '-3.25'.
c = -5

Simplifying
c = -5

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