2=4-1r

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Solution for 2=4-1r equation: 


Simplifying
2 = 4 + -1r

Solving
2 = 4 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
2 + r = 4 + -1r + r

Combine like terms: -1r + r = 0
2 + r = 4 + 0
2 + r = 4

Add '-2' to each side of the equation.
2 + -2 + r = 4 + -2

Combine like terms: 2 + -2 = 0
0 + r = 4 + -2
r = 4 + -2

Combine like terms: 4 + -2 = 2
r = 2

Simplifying
r = 2

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