Question

N627 и 628 ПОЖАЛУЙСТА

Answer 1

Ответ:

№627

1) 3/8 + 1/12 + 1/6 × 12+1/3+5/6= 3/8+1/12+2+1/3+5/6= 29/8=3,625

2) 2/3-1/6-4/9 × 9/7-5/12-5/18=2/3-1/6-4×1/7-5/12-5/18=2/3-1/6-4/7-5/12-5/18= - 193/252

3) 9/4 × 1/3 × 8/9 × 1/5 × 4/9= 1/3 × 8 × 1/5 × 1/9=8/135=0,0592

№628

1) 6а^2/7b × 21b^2/3a=2a×3b=6ab

2) 8c^3/5d × 15d^2/2c^2=4c×3d=12cd

3) 2^4 x × 5/2^4 =x×5=5x