exam Maths Puzzle Numerical Ability

(t+2)/t + 3/(t+1) =?
I cannot remember what to do for the first step please help.

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exam Other Question

I need help with a question that says: solve each of the following for x
*1/8=4^(6x+2)
*(1/4)^x=256
*log10x=4 2 triangles are similar
Triangle RTS where rt=4.2 and st=6.0 do not know rs
Triangle JLK where lk=8

what is the length of JL