Question

please answer my question

Answer 1

$3 \div1 5 \times 4 \\ = 3 \div 60 \\ = 1 \div 20 = 0.05$

Answer 2

3/15/4=3×4/15=12/15=4/5...

3/5/7 =3/5×7=3/35

3/5/7=3×7/5= 21/5

11/5/11/10= 11/5×10/11=2

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