Question

-4×(-3)÷2/3²-20×(3/4-4/5+7/10)

-35-[1/4×(-3)-5/6+2]÷(2/3-3/4)
-4²-[-3²+（1+0.6×2/3）÷（-3/10）]

Answer 1

-35-[1/4×(-3)-5/6+2]÷(2/3-3/4)
=-35-（-3/4-5/6+2）÷（-1/12）
=-35+(2-3/4-5/6)x12
=-35+2x12-3/4x12-5/6x12
=-35+24-9-10
=-30