Помогите срочно дам 25 баллов сделайте 154 156

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№154(7-5*(1 2/3)):0.8+0.2 = (7-5*5/3)/(8/10)+1/5 =(7-25/3)*5/4+1/5 = ((21-25)/3)*5/4+1/5 = (-4/3)*5/4+1/5 = -5/3+1/5 = -25/15+3/15 = -22/15 = -1 7/15№156(2 1/4)*(4/15+0.9)-(1/6)*2.25 = (9/4)*(4/15+9/10)-(1/6)*(9/4) = (9/4)*(4/15+9/10-1/6) = (9/4)*(8/30+27/30-5/30) = (9/4)*(30/30) = 9/4 = 2.25