exam Maths Puzzle Numerical Ability

I need help on the problem: 4i-2x-3=4ix+6i-5x. Solve for x and give the solution in standard "a+bi" form.

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exam Other Question

I need to convert 38 yards per second to miles per hour.

I know that 1 yard = .9144mi but am having trouble converting!

Thanks A worker can do a work in 18 days . An oher worker can do the same work but in 24 days ,and another in 30 days . If the 3 workers work 6 days altogether what part of the work will be done ?