40r-40=20r+40

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Solution for 40r-40=20r+40 equation:


Simplifying
40r + -40 = 20r + 40

Reorder the terms:
-40 + 40r = 20r + 40

Reorder the terms:
-40 + 40r = 40 + 20r

Solving
-40 + 40r = 40 + 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.
-40 + 40r + -20r = 40 + 20r + -20r

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

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

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

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

Combine like terms: 40 + 40 = 80
20r = 80

Divide each side by '20'.
r = 4

Simplifying
r = 4

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