Question

Помогите решить: 1)13*1 7\65-15,3 2)8 1\3*3,5*3\25*6,25:1\5:1\16 3)17*2 15\68-37,9 4)7,2*7\12*2,7*2 22\25:2 4\5:1\125 по действиям,даю 25 балла,:с мне на завтра:с

Answer 1

13×1 7/65-15.3=13×72/65-15.3=72/5-15.3=
=14.4-15.3=-0.9

8 1/3×3.5×3/25×6/25÷1/5÷1/16=
=25/3×3/25×7/2×6/25×5/1×16/1=336/5=67 1/5

17×2 15/68-37.9=17×151/68-37.9=
=151/4-37.9=37.75-37.9=-0.25

7.2×7/12×2.7×2 22/25÷2 4/5÷1/125=
=36/5×7/12×27/10×72/25÷14/5÷1/125=
=36/5×7/12×27/10×72/25×5/14×125/1=1458