13=3(22-r)

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Solution for 13=3(22-r) equation:


Simplifying
13 = 3(22 + -1r)
13 = (22 * 3 + -1r * 3)
13 = (66 + -3r)

Solving
13 = 66 + -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.
13 + 3r = 66 + -3r + 3r

Combine like terms: -3r + 3r = 0
13 + 3r = 66 + 0
13 + 3r = 66

Add '-13' to each side of the equation.
13 + -13 + 3r = 66 + -13

Combine like terms: 13 + -13 = 0
0 + 3r = 66 + -13
3r = 66 + -13

Combine like terms: 66 + -13 = 53
3r = 53

Divide each side by '3'.
r = 17.66666667

Simplifying
r = 17.66666667

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