Question

Помогите пожалуйста с д.з. по алгебре​

Answer 1

Объяснение:

(42 5/12 -21 11/18)-(25-4 1/9)=(41 51/36 -21 22/36)-(24 9/9 -4 1/9)=20 29/36 -20 20/36=9/36=1/4=0,25

(2 1/2 ÷3 2/3)÷(7 1/2 ÷7 1/3)×(5 1/4 ×4/21)=(5/2 ×3/11)÷(15/2 ×3/22)×(21/4 ×4/21)=15/22 ×44/45 ×1=2/3

1,5×(3/50 +0,2652÷0,13-1 17/30)+1 13/15=1,5×(0,06+26,52÷13-1 17/30)+1 13/15=1,5×(0,06+2,04-1 17/30)+1 13/15=1,5×(1 33/30 -1 17/30)+1 13/15=1,5×8/15 -1 17/30 +1 13/15=24/30 -47/30 +1 13/15=-23/30 +1 26/30=1 1/10=1,1

(3 1/3 +2,5)/(2,5-1 1/3) -5,7×2/19=(3 10/30 +2 15/30)/(2 15/30 -1 10/30) -3×0,2=(35/6)/(7/6) -0,6=35/6 ×6/7 -0,6=5-0,6=4,4