-7-2r=-4r+9

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


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

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

Solving
-7 + -2r = 9 + -4r

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
-7 + -2r + 4r = 9 + -4r + 4r

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

Combine like terms: -4r + 4r = 0
-7 + 2r = 9 + 0
-7 + 2r = 9

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

Combine like terms: -7 + 7 = 0
0 + 2r = 9 + 7
2r = 9 + 7

Combine like terms: 9 + 7 = 16
2r = 16

Divide each side by '2'.
r = 8

Simplifying
r = 8

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