Question

помогите математику пожалуйста

Answer 1

1) (-4/5)×(-3/8)×(-5/12)=(-4×3×5)/(5×4×2×4×3)=(-1)/(4×2)=-1/8=-0,125.

2) (-9/10)×(5/6)×(-2/3)=(3×3×5×2)/(2×5×3×2×3)=1/2=0,5.

3) (-7/8)×(-5/6)×(-24/25)=(-7×5×4×6)/(2×4×6×5×5)=(-7)/(10)=-7/10=-0,7.

4) (-25/44)×(63/100)×(22/45)×(-2(2/7))=(25×9×7×22)/(2×22×4×25×9×5)×(16/7)=(7×4×2×2)/(2×4×5×7)=2/5=0,4.