5r-20=5(3r+8)

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Solution for 5r-20=5(3r+8) equation:


Simplifying
5r + -20 = 5(3r + 8)

Reorder the terms:
-20 + 5r = 5(3r + 8)

Reorder the terms:
-20 + 5r = 5(8 + 3r)
-20 + 5r = (8 * 5 + 3r * 5)
-20 + 5r = (40 + 15r)

Solving
-20 + 5r = 40 + 15r

Solving for variable 'r'.

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

Add '-15r' to each side of the equation.
-20 + 5r + -15r = 40 + 15r + -15r

Combine like terms: 5r + -15r = -10r
-20 + -10r = 40 + 15r + -15r

Combine like terms: 15r + -15r = 0
-20 + -10r = 40 + 0
-20 + -10r = 40

Add '20' to each side of the equation.
-20 + 20 + -10r = 40 + 20

Combine like terms: -20 + 20 = 0
0 + -10r = 40 + 20
-10r = 40 + 20

Combine like terms: 40 + 20 = 60
-10r = 60

Divide each side by '-10'.
r = -6

Simplifying
r = -6

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