3=1-3r+8

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Solution for 3=1-3r+8 equation:


Simplifying
3 = 1 + -3r + 8

Reorder the terms:
3 = 1 + 8 + -3r

Combine like terms: 1 + 8 = 9
3 = 9 + -3r

Solving
3 = 9 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
3 + 3r = 9 + -3r + 3r

Combine like terms: -3r + 3r = 0
3 + 3r = 9 + 0
3 + 3r = 9

Add '-3' to each side of the equation.
3 + -3 + 3r = 9 + -3

Combine like terms: 3 + -3 = 0
0 + 3r = 9 + -3
3r = 9 + -3

Combine like terms: 9 + -3 = 6
3r = 6

Divide each side by '3'.
r = 2

Simplifying
r = 2

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