1.7=3.9-r

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Solution for 1.7=3.9-r equation: 


Simplifying
1.7 = 3.9 + -1r

Solving
1.7 = 3.9 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
1.7 + r = 3.9 + -1r + r

Combine like terms: -1r + r = 0
1.7 + r = 3.9 + 0
1.7 + r = 3.9

Add '-1.7' to each side of the equation.
1.7 + -1.7 + r = 3.9 + -1.7

Combine like terms: 1.7 + -1.7 = 0.0
0.0 + r = 3.9 + -1.7
r = 3.9 + -1.7

Combine like terms: 3.9 + -1.7 = 2.2
r = 2.2

Simplifying
r = 2.2

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