1+3r+5r=-7

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Solution for 1+3r+5r=-7 equation: 


Simplifying
1 + 3r + 5r = -7

Combine like terms: 3r + 5r = 8r
1 + 8r = -7

Solving
1 + 8r = -7

Solving for variable 'r'.

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

Add '-1' to each side of the equation.
1 + -1 + 8r = -7 + -1

Combine like terms: 1 + -1 = 0
0 + 8r = -7 + -1
8r = -7 + -1

Combine like terms: -7 + -1 = -8
8r = -8

Divide each side by '8'.
r = -1

Simplifying
r = -1

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