-30=5(4r-9)

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Solution for -30=5(4r-9) equation:


Simplifying
-30 = 5(4r + -9)

Reorder the terms:
-30 = 5(-9 + 4r)
-30 = (-9 * 5 + 4r * 5)
-30 = (-45 + 20r)

Solving
-30 = -45 + 20r

Solving for variable 'r'.

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

Add '-20r' to each side of the equation.
-30 + -20r = -45 + 20r + -20r

Combine like terms: 20r + -20r = 0
-30 + -20r = -45 + 0
-30 + -20r = -45

Add '30' to each side of the equation.
-30 + 30 + -20r = -45 + 30

Combine like terms: -30 + 30 = 0
0 + -20r = -45 + 30
-20r = -45 + 30

Combine like terms: -45 + 30 = -15
-20r = -15

Divide each side by '-20'.
r = 0.75

Simplifying
r = 0.75

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