21=7+6(c-5)

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Solution for 21=7+6(c-5) equation:


Simplifying
21 = 7 + 6(c + -5)

Reorder the terms:
21 = 7 + 6(-5 + c)
21 = 7 + (-5 * 6 + c * 6)
21 = 7 + (-30 + 6c)

Combine like terms: 7 + -30 = -23
21 = -23 + 6c

Solving
21 = -23 + 6c

Solving for variable 'c'.

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

Add '-6c' to each side of the equation.
21 + -6c = -23 + 6c + -6c

Combine like terms: 6c + -6c = 0
21 + -6c = -23 + 0
21 + -6c = -23

Add '-21' to each side of the equation.
21 + -21 + -6c = -23 + -21

Combine like terms: 21 + -21 = 0
0 + -6c = -23 + -21
-6c = -23 + -21

Combine like terms: -23 + -21 = -44
-6c = -44

Divide each side by '-6'.
c = 7.333333333

Simplifying
c = 7.333333333

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