-3(r-1)-7(-r+3)=-2r+3r

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Solution for -3(r-1)-7(-r+3)=-2r+3r equation:


Simplifying
-3(r + -1) + -7(-1r + 3) = -2r + 3r

Reorder the terms:
-3(-1 + r) + -7(-1r + 3) = -2r + 3r
(-1 * -3 + r * -3) + -7(-1r + 3) = -2r + 3r
(3 + -3r) + -7(-1r + 3) = -2r + 3r

Reorder the terms:
3 + -3r + -7(3 + -1r) = -2r + 3r
3 + -3r + (3 * -7 + -1r * -7) = -2r + 3r
3 + -3r + (-21 + 7r) = -2r + 3r

Reorder the terms:
3 + -21 + -3r + 7r = -2r + 3r

Combine like terms: 3 + -21 = -18
-18 + -3r + 7r = -2r + 3r

Combine like terms: -3r + 7r = 4r
-18 + 4r = -2r + 3r

Combine like terms: -2r + 3r = 1r
-18 + 4r = 1r

Solving
-18 + 4r = 1r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-18 + 4r + -1r = 1r + -1r

Combine like terms: 4r + -1r = 3r
-18 + 3r = 1r + -1r

Combine like terms: 1r + -1r = 0
-18 + 3r = 0

Add '18' to each side of the equation.
-18 + 18 + 3r = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 3r = 0 + 18
3r = 0 + 18

Combine like terms: 0 + 18 = 18
3r = 18

Divide each side by '3'.
r = 6

Simplifying
r = 6

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