5(5r+5)=10(5r-20)

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Solution for 5(5r+5)=10(5r-20) equation:


Simplifying
5(5r + 5) = 10(5r + -20)

Reorder the terms:
5(5 + 5r) = 10(5r + -20)
(5 * 5 + 5r * 5) = 10(5r + -20)
(25 + 25r) = 10(5r + -20)

Reorder the terms:
25 + 25r = 10(-20 + 5r)
25 + 25r = (-20 * 10 + 5r * 10)
25 + 25r = (-200 + 50r)

Solving
25 + 25r = -200 + 50r

Solving for variable 'r'.

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

Add '-50r' to each side of the equation.
25 + 25r + -50r = -200 + 50r + -50r

Combine like terms: 25r + -50r = -25r
25 + -25r = -200 + 50r + -50r

Combine like terms: 50r + -50r = 0
25 + -25r = -200 + 0
25 + -25r = -200

Add '-25' to each side of the equation.
25 + -25 + -25r = -200 + -25

Combine like terms: 25 + -25 = 0
0 + -25r = -200 + -25
-25r = -200 + -25

Combine like terms: -200 + -25 = -225
-25r = -225

Divide each side by '-25'.
r = 9

Simplifying
r = 9

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