1r=8(r+-9)

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


Simplifying
1r = 8(r + -9)

Reorder the terms:
1r = 8(-9 + r)
1r = (-9 * 8 + r * 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 = -7r
-7r = -72 + 8r + -8r

Combine like terms: 8r + -8r = 0
-7r = -72 + 0
-7r = -72

Divide each side by '-7'.
r = 10.28571429

Simplifying
r = 10.28571429

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