exam Maths Puzzle Numerical Ability

1. 0.2(x+3)-4(2x-3)=3.4


2. x/2+ x/5+ x/3=31

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exam Other Question

(16y‾¾ /t½)‾2 Please help me simplify this problem?
Thanks a Bunch!
homework:how many rooms will you fill if you charge $120 per night. find an equation of the line containing the given point having the given slope.
1.(4,-3),m=-1
2.(-7,2),m=3