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

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


Simplifying
-5 = 4(2 + 9r) + -5r
-5 = (2 * 4 + 9r * 4) + -5r
-5 = (8 + 36r) + -5r

Combine like terms: 36r + -5r = 31r
-5 = 8 + 31r

Solving
-5 = 8 + 31r

Solving for variable 'r'.

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

Add '-31r' to each side of the equation.
-5 + -31r = 8 + 31r + -31r

Combine like terms: 31r + -31r = 0
-5 + -31r = 8 + 0
-5 + -31r = 8

Add '5' to each side of the equation.
-5 + 5 + -31r = 8 + 5

Combine like terms: -5 + 5 = 0
0 + -31r = 8 + 5
-31r = 8 + 5

Combine like terms: 8 + 5 = 13
-31r = 13

Divide each side by '-31'.
r = -0.4193548387

Simplifying
r = -0.4193548387

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