21(2-c)+25c=45

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Solution for 21(2-c)+25c=45 equation:


Simplifying
21(2 + -1c) + 25c = 45
(2 * 21 + -1c * 21) + 25c = 45
(42 + -21c) + 25c = 45

Combine like terms: -21c + 25c = 4c
42 + 4c = 45

Solving
42 + 4c = 45

Solving for variable 'c'.

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

Add '-42' to each side of the equation.
42 + -42 + 4c = 45 + -42

Combine like terms: 42 + -42 = 0
0 + 4c = 45 + -42
4c = 45 + -42

Combine like terms: 45 + -42 = 3
4c = 3

Divide each side by '4'.
c = 0.75

Simplifying
c = 0.75

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