1-5r=-7-7r

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


Simplifying
1 + -5r = -7 + -7r

Solving
1 + -5r = -7 + -7r

Solving for variable 'r'.

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

Add '7r' to each side of the equation.
1 + -5r + 7r = -7 + -7r + 7r

Combine like terms: -5r + 7r = 2r
1 + 2r = -7 + -7r + 7r

Combine like terms: -7r + 7r = 0
1 + 2r = -7 + 0
1 + 2r = -7

Add '-1' to each side of the equation.
1 + -1 + 2r = -7 + -1

Combine like terms: 1 + -1 = 0
0 + 2r = -7 + -1
2r = -7 + -1

Combine like terms: -7 + -1 = -8
2r = -8

Divide each side by '2'.
r = -4

Simplifying
r = -4

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