4r+8+5=-15-3r

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Solution for 4r+8+5=-15-3r equation:


Simplifying
4r + 8 + 5 = -15 + -3r

Reorder the terms:
8 + 5 + 4r = -15 + -3r

Combine like terms: 8 + 5 = 13
13 + 4r = -15 + -3r

Solving
13 + 4r = -15 + -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.
13 + 4r + 3r = -15 + -3r + 3r

Combine like terms: 4r + 3r = 7r
13 + 7r = -15 + -3r + 3r

Combine like terms: -3r + 3r = 0
13 + 7r = -15 + 0
13 + 7r = -15

Add '-13' to each side of the equation.
13 + -13 + 7r = -15 + -13

Combine like terms: 13 + -13 = 0
0 + 7r = -15 + -13
7r = -15 + -13

Combine like terms: -15 + -13 = -28
7r = -28

Divide each side by '7'.
r = -4

Simplifying
r = -4

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