5r(4)=20r

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Solution for 5r(4)=20r equation: 


Simplifying
5r(4) = 20r

Reorder the terms for easier multiplication:
5 * 4r = 20r

Multiply 5 * 4
20r = 20r

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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