3+2(r+2)=9+r

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Solution for 3+2(r+2)=9+r equation:


Simplifying
3 + 2(r + 2) = 9 + r

Reorder the terms:
3 + 2(2 + r) = 9 + r
3 + (2 * 2 + r * 2) = 9 + r
3 + (4 + 2r) = 9 + r

Combine like terms: 3 + 4 = 7
7 + 2r = 9 + r

Solving
7 + 2r = 9 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
7 + 2r + -1r = 9 + r + -1r

Combine like terms: 2r + -1r = 1r
7 + 1r = 9 + r + -1r

Combine like terms: r + -1r = 0
7 + 1r = 9 + 0
7 + 1r = 9

Add '-7' to each side of the equation.
7 + -7 + 1r = 9 + -7

Combine like terms: 7 + -7 = 0
0 + 1r = 9 + -7
1r = 9 + -7

Combine like terms: 9 + -7 = 2
1r = 2

Divide each side by '1'.
r = 2

Simplifying
r = 2

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