2/5-2r=3/20-4

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Solution for 2/5-2r=3/20-4 equation:


2/5-2r=3/20-4

We simplify the equation to the form, which is simple to understand 
2/5-2r=3/20-4

Simplifying:
 + 0.4-2r=3/20-4

Simplifying:
 + 0.4-2r=0.15-4

We move all terms containing r to the left and all other terms to the right. 
-2r=0.15-4-0.4

We simplify left and right side of the equation. 
-2r=-4.25

We divide both sides of the equation by -2 to get r. 
r=2.125

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