r-20=4+6-4r

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Solution for r-20=4+6-4r equation:


Simplifying
r + -20 = 4 + 6 + -4r

Reorder the terms:
-20 + r = 4 + 6 + -4r

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

Solving
-20 + r = 10 + -4r

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
-20 + r + 4r = 10 + -4r + 4r

Combine like terms: r + 4r = 5r
-20 + 5r = 10 + -4r + 4r

Combine like terms: -4r + 4r = 0
-20 + 5r = 10 + 0
-20 + 5r = 10

Add '20' to each side of the equation.
-20 + 20 + 5r = 10 + 20

Combine like terms: -20 + 20 = 0
0 + 5r = 10 + 20
5r = 10 + 20

Combine like terms: 10 + 20 = 30
5r = 30

Divide each side by '5'.
r = 6

Simplifying
r = 6

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