0.3a+(0.2a-0.5)+0.2(a-2)=1.3

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Solution for 0.3a+(0.2a-0.5)+0.2(a-2)=1.3 equation:


0.3a+(0.2a-0.5) + 0.2(a-2)=1.3

We simplify the equation to the form, which is simple to understand 
0.3a+(0.2a-0.5) + 0.2(a-2)=1.3

Remove unnecessary parentheses
 + 0.3a + 0.2a-0.5 + 0.2+*(+a-2+)=+1.3

Reorder the terms in parentheses
0.3a0.2a-0.5+( + 0.2a-0.4)=1.3

Remove unnecessary parentheses
 + 0.3a + 0.2a-0.5 + 0.2a-0.4=+1.3

We move all terms containing a to the left and all other terms to the right. 
 + 0.3a + 0.2a + 0.2a=+1.3 + 0.5 + 0.4

We simplify left and right side of the equation. 
 + 0.7a=+2.2

We divide both sides of the equation by 0.7 to get a. 
a=3.14285714286

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