Hii friend,15(Y-4) -2(Y-9) +5(Y+6) = 015Y - 60 -2Y +18 +5Y +30 = 015Y-2Y+5Y-60+18+30 = 018Y - 12 = 0.18Y = 12Y = 12/18Y = 2/3HOPE IT WILL HELP YOU..... :-)
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