4r=4(r+20)

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Solution for 4r=4(r+20) equation: 


Simplifying
4r = 4(r + 20)

Reorder the terms:
4r = 4(20 + r)
4r = (20 * 4 + r * 4)
4r = (80 + 4r)

Add '-4r' to each side of the equation.
4r + -4r = 80 + 4r + -4r

Combine like terms: 4r + -4r = 0
0 = 80 + 4r + -4r

Combine like terms: 4r + -4r = 0
0 = 80 + 0
0 = 80

Solving
0 = 80

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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