9(5+r)=10+2r

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Solution for 9(5+r)=10+2r equation:


Simplifying
9(5 + r) = 10 + 2r
(5 * 9 + r * 9) = 10 + 2r
(45 + 9r) = 10 + 2r

Solving
45 + 9r = 10 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
45 + 9r + -2r = 10 + 2r + -2r

Combine like terms: 9r + -2r = 7r
45 + 7r = 10 + 2r + -2r

Combine like terms: 2r + -2r = 0
45 + 7r = 10 + 0
45 + 7r = 10

Add '-45' to each side of the equation.
45 + -45 + 7r = 10 + -45

Combine like terms: 45 + -45 = 0
0 + 7r = 10 + -45
7r = 10 + -45

Combine like terms: 10 + -45 = -35
7r = -35

Divide each side by '7'.
r = -5

Simplifying
r = -5

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