-7=-r+1

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Solution for -7=-r+1 equation:


Simplifying
-7 = -1r + 1

Reorder the terms:
-7 = 1 + -1r

Solving
-7 = 1 + -1r

Solving for variable 'r'.

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

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

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

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

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

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

Simplifying
r = 8

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