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2 (a-2)+7a-3 (1+a)=0
We simplify the equation to the form, which is simple to understand
2(a-2)+7a-3(1+a)=0
Reorder the terms in parentheses
+(+2a-4)+7a-3*(1+a)=0
Remove unnecessary parentheses
+2a-4+7a-3+*(+1+a+)=0
Reorder the terms in parentheses
+2a-4+7a+(-3-3a)=0
Remove unnecessary parentheses
+2a-4+7a-3-3a=0
We move all terms containing a to the left and all other terms to the right.
+2a+7a-3a=0+4+3
We simplify left and right side of the equation.
+6a=+7
We divide both sides of the equation by 6 to get a.
a=1.1666666666667
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