-7r+13.292=-1.97r+3.1(3.8-6.5r)

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Solution for -7r+13.292=-1.97r+3.1(3.8-6.5r) equation:


Simplifying
-7r + 13.292 = -1.97r + 3.1(3.8 + -6.5r)

Reorder the terms:
13.292 + -7r = -1.97r + 3.1(3.8 + -6.5r)
13.292 + -7r = -1.97r + (3.8 * 3.1 + -6.5r * 3.1)
13.292 + -7r = -1.97r + (11.78 + -20.15r)

Reorder the terms:
13.292 + -7r = 11.78 + -1.97r + -20.15r

Combine like terms: -1.97r + -20.15r = -22.12r
13.292 + -7r = 11.78 + -22.12r

Solving
13.292 + -7r = 11.78 + -22.12r

Solving for variable 'r'.

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

Add '22.12r' to each side of the equation.
13.292 + -7r + 22.12r = 11.78 + -22.12r + 22.12r

Combine like terms: -7r + 22.12r = 15.12r
13.292 + 15.12r = 11.78 + -22.12r + 22.12r

Combine like terms: -22.12r + 22.12r = 0.00
13.292 + 15.12r = 11.78 + 0.00
13.292 + 15.12r = 11.78

Add '-13.292' to each side of the equation.
13.292 + -13.292 + 15.12r = 11.78 + -13.292

Combine like terms: 13.292 + -13.292 = 0.000
0.000 + 15.12r = 11.78 + -13.292
15.12r = 11.78 + -13.292

Combine like terms: 11.78 + -13.292 = -1.512
15.12r = -1.512

Divide each side by '15.12'.
r = -0.1

Simplifying
r = -0.1

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