6r+21=4(-6r-3)+3

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Solution for 6r+21=4(-6r-3)+3 equation:


Simplifying
6r + 21 = 4(-6r + -3) + 3

Reorder the terms:
21 + 6r = 4(-6r + -3) + 3

Reorder the terms:
21 + 6r = 4(-3 + -6r) + 3
21 + 6r = (-3 * 4 + -6r * 4) + 3
21 + 6r = (-12 + -24r) + 3

Reorder the terms:
21 + 6r = -12 + 3 + -24r

Combine like terms: -12 + 3 = -9
21 + 6r = -9 + -24r

Solving
21 + 6r = -9 + -24r

Solving for variable 'r'.

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

Add '24r' to each side of the equation.
21 + 6r + 24r = -9 + -24r + 24r

Combine like terms: 6r + 24r = 30r
21 + 30r = -9 + -24r + 24r

Combine like terms: -24r + 24r = 0
21 + 30r = -9 + 0
21 + 30r = -9

Add '-21' to each side of the equation.
21 + -21 + 30r = -9 + -21

Combine like terms: 21 + -21 = 0
0 + 30r = -9 + -21
30r = -9 + -21

Combine like terms: -9 + -21 = -30
30r = -30

Divide each side by '30'.
r = -1

Simplifying
r = -1

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