4r+2r+4r-9r=20

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Solution for 4r+2r+4r-9r=20 equation: 


Simplifying
4r + 2r + 4r + -9r = 20

Combine like terms: 4r + 2r = 6r
6r + 4r + -9r = 20

Combine like terms: 6r + 4r = 10r
10r + -9r = 20

Combine like terms: 10r + -9r = 1r
1r = 20

Solving
1r = 20

Solving for variable 'r'.

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

Divide each side by '1'.
r = 20

Simplifying
r = 20

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