-3.5=1.4+2.1r

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Solution for -3.5=1.4+2.1r equation:


-3.5=1.4+2.1r

We simplify the equation to the form, which is simple to understand 
-3.5=1.4+2.1r

We move all terms containing r to the left and all other terms to the right. 
-2.1r=+1.4+3.5

We simplify left and right side of the equation. 
-2.1r=+4.9

We divide both sides of the equation by -02.1 to get r. 
r=-2.33333333333

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