convert 1.5 into 3/2 ok now 3/2t*2+5t-84=0 now 3/2t*2+14t-9t-84=0[3/2.84=121also=3.7.2.3 ok so factors are 14 and-9 ][ here we let .=multiplication means 2.3 =2 multipy3] now taking comman 3/2t[t+28/3]-9[t+28/3] now [t+28/3] [3/2t-9]=0 so t=-28/3 or t=9.2/3 so we take only postive value so t=9.2/3=6so t =6 i hope you will understand

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Mayank Kundu 6 years, 4 months ago

wait

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Himanshu Saini 6 years, 4 months ago

Show the solution

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Mayank Kundu 6 years, 4 months ago

t is 6

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