3r+7-4r=2

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Solution for 3r+7-4r=2 equation: 


Simplifying
3r + 7 + -4r = 2

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

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

Solving
7 + -1r = 2

Solving for variable 'r'.

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

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

Combine like terms: 7 + -7 = 0
0 + -1r = 2 + -7
-1r = 2 + -7

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

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

Simplifying
r = 5

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