Question

Pomożesz obliczyć wyrażenia arytmetyczne? (3/4-1/5)/1/2=
2/3*(1/2-1/6)=
(1-7/9)*(5,2-0,7)=
(6,5-4,7)/(4-2 i 1/5)=
(6,25-2 i 1/2)/2 i 1/7-1=

zapisz obliczenia!

Answer 1

(3/4-1/5)/1/2=(15/20-4/20) / 1/2 = 11/20 :1/2 = 11/20 * 2/1 = 11/10 = 1  1/10
2/3*(1/2-1/6)= 2/3 * (3/6-1/6) = 2/3 * 2/6 = 2/9
(1-7/9)*(5,2-0,7)= 2/9 * 4,50 = 2/9 * 9/2 = 1
(6,5-4,7)/(4-2 i 1/5)= 1,80 : 1 4/5 = 9/5 *:9/5 = 9/5 * 5/9 = 1
(6,25-2 i 1/2)/2 i 1/7-1= ((6,25 - 2,50):2 1/7) - 1= (3,75 : 2 1/7 )-1 = (15/4:15/4)-1= (15/4 * 4/15)-1 =1-1=0