book Maths Puzzle Numerical Ability

Clear the Fraction first,if neccesary

7/2x+1/2x=3x+3/2+5/2x

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book Other Question

what do i do to disstrebuet a neg like 7x-2(x-4y)what do i do for frac x frac A pickup truckis driven 280 miles. If it had traveled 5 mph faster, it could have made the trip in 1 hour less time. What was the speed of the truck?