-1r=8(1r+-9)

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Solution for -1r=8(1r+-9) equation:


Simplifying
-1r = 8(1r + -9)

Reorder the terms:
-1r = 8(-9 + 1r)
-1r = (-9 * 8 + 1r * 8)
-1r = (-72 + 8r)

Solving
-1r = -72 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
-1r + -8r = -72 + 8r + -8r

Combine like terms: -1r + -8r = -9r
-9r = -72 + 8r + -8r

Combine like terms: 8r + -8r = 0
-9r = -72 + 0
-9r = -72

Divide each side by '-9'.
r = 8

Simplifying
r = 8

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