-15+6r=3(r+7)-6r

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Solution for -15+6r=3(r+7)-6r equation:


Simplifying
-15 + 6r = 3(r + 7) + -6r

Reorder the terms:
-15 + 6r = 3(7 + r) + -6r
-15 + 6r = (7 * 3 + r * 3) + -6r
-15 + 6r = (21 + 3r) + -6r

Combine like terms: 3r + -6r = -3r
-15 + 6r = 21 + -3r

Solving
-15 + 6r = 21 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
-15 + 6r + 3r = 21 + -3r + 3r

Combine like terms: 6r + 3r = 9r
-15 + 9r = 21 + -3r + 3r

Combine like terms: -3r + 3r = 0
-15 + 9r = 21 + 0
-15 + 9r = 21

Add '15' to each side of the equation.
-15 + 15 + 9r = 21 + 15

Combine like terms: -15 + 15 = 0
0 + 9r = 21 + 15
9r = 21 + 15

Combine like terms: 21 + 15 = 36
9r = 36

Divide each side by '9'.
r = 4

Simplifying
r = 4

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