Question

2-(5÷3+0,5)÷(5÷3-1,6)-(1+0,75-1÷2)÷1,25

Answer 1

2-(5:3+0,5):(5:3-1,6)-(1+0,75-1:2):1,25=
=2-(5/3+1/2):(5/3-16/10)-(1+75/100-1/2):125/100=
=2-(10+3)/6:(25-24)/15-(1+3/4-1/2):5/4=
=2-13/6:1/15-(7/4-1/2) ×4/5=
=2-13/6:1/15-5/4 ×4/5=
=2-13/6×15-1=
=2-13/2×5-1=
=1-65/2=
=-63/2=-31,5