3.7r-2.2=-3.6+3.9r

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Solution for 3.7r-2.2=-3.6+3.9r equation: 


Simplifying
3.7r + -2.2 = -3.6 + 3.9r

Reorder the terms:
-2.2 + 3.7r = -3.6 + 3.9r

Solving
-2.2 + 3.7r = -3.6 + 3.9r

Solving for variable 'r'.

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

Add '-3.9r' to each side of the equation.
-2.2 + 3.7r + -3.9r = -3.6 + 3.9r + -3.9r

Combine like terms: 3.7r + -3.9r = -0.2r
-2.2 + -0.2r = -3.6 + 3.9r + -3.9r

Combine like terms: 3.9r + -3.9r = 0.0
-2.2 + -0.2r = -3.6 + 0.0
-2.2 + -0.2r = -3.6

Add '2.2' to each side of the equation.
-2.2 + 2.2 + -0.2r = -3.6 + 2.2

Combine like terms: -2.2 + 2.2 = 0.0
0.0 + -0.2r = -3.6 + 2.2
-0.2r = -3.6 + 2.2

Combine like terms: -3.6 + 2.2 = -1.4
-0.2r = -1.4

Divide each side by '-0.2'.
r = 7

Simplifying
r = 7

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