13.88-2.1r=1-4.5r

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Solution for 13.88-2.1r=1-4.5r equation: 


Simplifying
13.88 + -2.1r = 1 + -4.5r

Solving
13.88 + -2.1r = 1 + -4.5r

Solving for variable 'r'.

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

Add '4.5r' to each side of the equation.
13.88 + -2.1r + 4.5r = 1 + -4.5r + 4.5r

Combine like terms: -2.1r + 4.5r = 2.4r
13.88 + 2.4r = 1 + -4.5r + 4.5r

Combine like terms: -4.5r + 4.5r = 0.0
13.88 + 2.4r = 1 + 0.0
13.88 + 2.4r = 1

Add '-13.88' to each side of the equation.
13.88 + -13.88 + 2.4r = 1 + -13.88

Combine like terms: 13.88 + -13.88 = 0.00
0.00 + 2.4r = 1 + -13.88
2.4r = 1 + -13.88

Combine like terms: 1 + -13.88 = -12.88
2.4r = -12.88

Divide each side by '2.4'.
r = -5.366666667

Simplifying
r = -5.366666667

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