21-(2c+3)=2(c+4)+0

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Solution for 21-(2c+3)=2(c+4)+0 equation:


Simplifying
21 + -1(2c + 3) = 2(c + 4) + 0

Reorder the terms:
21 + -1(3 + 2c) = 2(c + 4) + 0
21 + (3 * -1 + 2c * -1) = 2(c + 4) + 0
21 + (-3 + -2c) = 2(c + 4) + 0

Combine like terms: 21 + -3 = 18
18 + -2c = 2(c + 4) + 0

Reorder the terms:
18 + -2c = 2(4 + c) + 0
18 + -2c = (4 * 2 + c * 2) + 0
18 + -2c = (8 + 2c) + 0

Reorder the terms:
18 + -2c = 8 + 0 + 2c

Combine like terms: 8 + 0 = 8
18 + -2c = 8 + 2c

Solving
18 + -2c = 8 + 2c

Solving for variable 'c'.

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

Add '-2c' to each side of the equation.
18 + -2c + -2c = 8 + 2c + -2c

Combine like terms: -2c + -2c = -4c
18 + -4c = 8 + 2c + -2c

Combine like terms: 2c + -2c = 0
18 + -4c = 8 + 0
18 + -4c = 8

Add '-18' to each side of the equation.
18 + -18 + -4c = 8 + -18

Combine like terms: 18 + -18 = 0
0 + -4c = 8 + -18
-4c = 8 + -18

Combine like terms: 8 + -18 = -10
-4c = -10

Divide each side by '-4'.
c = 2.5

Simplifying
c = 2.5

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