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1/3x+7/3x=(2/5)-(4/5)
We simplify the equation to the form, which is simple to understand
1/3x+7/3x=(2/5)-(4/5)
Remove unnecessary parentheses
/1=0.4-( + 0.8)
Remove unnecessary parentheses
/1=0.4-0.8
We move all terms containing x to the left and all other terms to the right.
0=0.4-0.8-1
We simplify left and right side of the equation.
0=-1.4
0=-1.4
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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