13=4(-7r-3)-2r

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Solution for 13=4(-7r-3)-2r equation:


Simplifying
13 = 4(-7r + -3) + -2r

Reorder the terms:
13 = 4(-3 + -7r) + -2r
13 = (-3 * 4 + -7r * 4) + -2r
13 = (-12 + -28r) + -2r

Combine like terms: -28r + -2r = -30r
13 = -12 + -30r

Solving
13 = -12 + -30r

Solving for variable 'r'.

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

Add '30r' to each side of the equation.
13 + 30r = -12 + -30r + 30r

Combine like terms: -30r + 30r = 0
13 + 30r = -12 + 0
13 + 30r = -12

Add '-13' to each side of the equation.
13 + -13 + 30r = -12 + -13

Combine like terms: 13 + -13 = 0
0 + 30r = -12 + -13
30r = -12 + -13

Combine like terms: -12 + -13 = -25
30r = -25

Divide each side by '30'.
r = -0.8333333333

Simplifying
r = -0.8333333333

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