21(3c+1)-4=13

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Solution for 21(3c+1)-4=13 equation:


Simplifying
21(3c + 1) + -4 = 13

Reorder the terms:
21(1 + 3c) + -4 = 13
(1 * 21 + 3c * 21) + -4 = 13
(21 + 63c) + -4 = 13

Reorder the terms:
21 + -4 + 63c = 13

Combine like terms: 21 + -4 = 17
17 + 63c = 13

Solving
17 + 63c = 13

Solving for variable 'c'.

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

Add '-17' to each side of the equation.
17 + -17 + 63c = 13 + -17

Combine like terms: 17 + -17 = 0
0 + 63c = 13 + -17
63c = 13 + -17

Combine like terms: 13 + -17 = -4
63c = -4

Divide each side by '63'.
c = -0.06349206349

Simplifying
c = -0.06349206349

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