-5(5r+9)+5(r-6)=

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Solution for -5(5r+9)+5(r-6)= equation:


Simplifying
-5(5r + 9) + 5(r + -6) = 0

Reorder the terms:
-5(9 + 5r) + 5(r + -6) = 0
(9 * -5 + 5r * -5) + 5(r + -6) = 0
(-45 + -25r) + 5(r + -6) = 0

Reorder the terms:
-45 + -25r + 5(-6 + r) = 0
-45 + -25r + (-6 * 5 + r * 5) = 0
-45 + -25r + (-30 + 5r) = 0

Reorder the terms:
-45 + -30 + -25r + 5r = 0

Combine like terms: -45 + -30 = -75
-75 + -25r + 5r = 0

Combine like terms: -25r + 5r = -20r
-75 + -20r = 0

Solving
-75 + -20r = 0

Solving for variable 'r'.

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

Add '75' to each side of the equation.
-75 + 75 + -20r = 0 + 75

Combine like terms: -75 + 75 = 0
0 + -20r = 0 + 75
-20r = 0 + 75

Combine like terms: 0 + 75 = 75
-20r = 75

Divide each side by '-20'.
r = -3.75

Simplifying
r = -3.75

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