Question

2/9 от 81
70% от 55
#2
(3/4-1/9+2/3)×36;
2.2/7×4.7/8+1,25×2.2/7.
Пожалуйста!)

Answer 1

81:9=9, 9*2=18
70% от 55=38,5

(3/4-1/9+2/3)×36=((27-4)/36+2/3)*36=((23+24)/33)*36=47/33*36=564/11=51 3/11

2.2/7×4.7/8+1,25×2.2/7=16/7*39/8+5/4*16/7=2/7*39/1+5/1*4/7=78/7+20/7=98/7=14