-2(-9r-4+5b)=

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Solution for -2(-9r-4+5b)= equation:


Simplifying
-2(-9r + -4 + 5b) = 0

Reorder the terms:
-2(-4 + 5b + -9r) = 0
(-4 * -2 + 5b * -2 + -9r * -2) = 0
(8 + -10b + 18r) = 0

Solving
8 + -10b + 18r = 0

Solving for variable 'b'.

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

Add '-8' to each side of the equation.
8 + -10b + -8 + 18r = 0 + -8

Reorder the terms:
8 + -8 + -10b + 18r = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -10b + 18r = 0 + -8
-10b + 18r = 0 + -8

Combine like terms: 0 + -8 = -8
-10b + 18r = -8

Add '-18r' to each side of the equation.
-10b + 18r + -18r = -8 + -18r

Combine like terms: 18r + -18r = 0
-10b + 0 = -8 + -18r
-10b = -8 + -18r

Divide each side by '-10'.
b = 0.8 + 1.8r

Simplifying
b = 0.8 + 1.8r

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