-2(9r+8)+5(-r+1)=0

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Solution for -2(9r+8)+5(-r+1)=0 equation:


Simplifying
-2(9r + 8) + 5(-1r + 1) = 0

Reorder the terms:
-2(8 + 9r) + 5(-1r + 1) = 0
(8 * -2 + 9r * -2) + 5(-1r + 1) = 0
(-16 + -18r) + 5(-1r + 1) = 0

Reorder the terms:
-16 + -18r + 5(1 + -1r) = 0
-16 + -18r + (1 * 5 + -1r * 5) = 0
-16 + -18r + (5 + -5r) = 0

Reorder the terms:
-16 + 5 + -18r + -5r = 0

Combine like terms: -16 + 5 = -11
-11 + -18r + -5r = 0

Combine like terms: -18r + -5r = -23r
-11 + -23r = 0

Solving
-11 + -23r = 0

Solving for variable 'r'.

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

Add '11' to each side of the equation.
-11 + 11 + -23r = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -23r = 0 + 11
-23r = 0 + 11

Combine like terms: 0 + 11 = 11
-23r = 11

Divide each side by '-23'.
r = -0.4782608696

Simplifying
r = -0.4782608696

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