20r-24r-15=25

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Solution for 20r-24r-15=25 equation:


Simplifying
20r + -24r + -15 = 25

Reorder the terms:
-15 + 20r + -24r = 25

Combine like terms: 20r + -24r = -4r
-15 + -4r = 25

Solving
-15 + -4r = 25

Solving for variable 'r'.

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

Add '15' to each side of the equation.
-15 + 15 + -4r = 25 + 15

Combine like terms: -15 + 15 = 0
0 + -4r = 25 + 15
-4r = 25 + 15

Combine like terms: 25 + 15 = 40
-4r = 40

Divide each side by '-4'.
r = -10

Simplifying
r = -10

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