5+2r-1=7r+9-4r

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Solution for 5+2r-1=7r+9-4r equation:


Simplifying
5 + 2r + -1 = 7r + 9 + -4r

Reorder the terms:
5 + -1 + 2r = 7r + 9 + -4r

Combine like terms: 5 + -1 = 4
4 + 2r = 7r + 9 + -4r

Reorder the terms:
4 + 2r = 9 + 7r + -4r

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

Solving
4 + 2r = 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.
4 + 2r + -3r = 9 + 3r + -3r

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

Combine like terms: 3r + -3r = 0
4 + -1r = 9 + 0
4 + -1r = 9

Add '-4' to each side of the equation.
4 + -4 + -1r = 9 + -4

Combine like terms: 4 + -4 = 0
0 + -1r = 9 + -4
-1r = 9 + -4

Combine like terms: 9 + -4 = 5
-1r = 5

Divide each side by '-1'.
r = -5

Simplifying
r = -5

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