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

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


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

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

Combine like terms: 4 + -1 = 3
3 + 2r = 7r + 7 + -4r

Reorder the terms:
3 + 2r = 7 + 7r + -4r

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

Solving
3 + 2r = 7 + 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.
3 + 2r + -3r = 7 + 3r + -3r

Combine like terms: 2r + -3r = -1r
3 + -1r = 7 + 3r + -3r

Combine like terms: 3r + -3r = 0
3 + -1r = 7 + 0
3 + -1r = 7

Add '-3' to each side of the equation.
3 + -3 + -1r = 7 + -3

Combine like terms: 3 + -3 = 0
0 + -1r = 7 + -3
-1r = 7 + -3

Combine like terms: 7 + -3 = 4
-1r = 4

Divide each side by '-1'.
r = -4

Simplifying
r = -4

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