3-3r+2+6r-2r-1=3+2*9

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Solution for 3-3r+2+6r-2r-1=3+2*9 equation:


Simplifying
3 + -3r + 2 + 6r + -2r + -1 = 3 + 2 * 9

Reorder the terms:
3 + 2 + -1 + -3r + 6r + -2r = 3 + 2 * 9

Combine like terms: 3 + 2 = 5
5 + -1 + -3r + 6r + -2r = 3 + 2 * 9

Combine like terms: 5 + -1 = 4
4 + -3r + 6r + -2r = 3 + 2 * 9

Combine like terms: -3r + 6r = 3r
4 + 3r + -2r = 3 + 2 * 9

Combine like terms: 3r + -2r = 1r
4 + 1r = 3 + 2 * 9

Multiply 2 * 9
4 + 1r = 3 + 18

Combine like terms: 3 + 18 = 21
4 + 1r = 21

Solving
4 + 1r = 21

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + 1r = 21 + -4

Combine like terms: 4 + -4 = 0
0 + 1r = 21 + -4
1r = 21 + -4

Combine like terms: 21 + -4 = 17
1r = 17

Divide each side by '1'.
r = 17

Simplifying
r = 17

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