4-r=-2/7

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Solution for 4-r=-2/7 equation:


4-r=-2/7

We simplify the equation to the form, which is simple to understand 
4-r=-2/7

Simplifying:
4-r=-0.285714285714

We move all terms containing r to the left and all other terms to the right. 
-1r=-0.285714285714-4

We simplify left and right side of the equation. 
-1r=-4.28571428571

We divide both sides of the equation by -1 to get r. 
r=4.28571428571

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