-13-3r=8+4r

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Solution for -13-3r=8+4r equation:


Simplifying
-13 + -3r = 8 + 4r

Solving
-13 + -3r = 8 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
-13 + -3r + -4r = 8 + 4r + -4r

Combine like terms: -3r + -4r = -7r
-13 + -7r = 8 + 4r + -4r

Combine like terms: 4r + -4r = 0
-13 + -7r = 8 + 0
-13 + -7r = 8

Add '13' to each side of the equation.
-13 + 13 + -7r = 8 + 13

Combine like terms: -13 + 13 = 0
0 + -7r = 8 + 13
-7r = 8 + 13

Combine like terms: 8 + 13 = 21
-7r = 21

Divide each side by '-7'.
r = -3

Simplifying
r = -3

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