exam Maths Puzzle Numerical Ability

I am having trouble. Can someone please help me.

Solve:
-3(x+1)=2(x-8)+3

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exam Other Question

A bus leaves a station at 1 P.M., traveling west at an average rate of 44 mi/h. At 2 P.M. on the same day a second bus leaves the same station, traveling east at a rate of 48 mi/h. Chemistry graphing I don't understand how to do it with significant numbers If the mass is a number like 44.712 how do I do it