Question

2. Обчисли значення виразу a) 7/9-1/3+5/6=. б.5/11+2/3+1/9+6/11=​

Answer 1

а) 13/18 тринадцать восемнадцатых

б) 1 7/9 одна целая и семь девятых

Пошаговое объяснение:

а) (7/9)*2-(1/3)*6+(5/6)*3=14/18-6/18+15/18=8/18+15/18=13/18

б) 5/11+2/3+1/9+6/11=(5/11+6/11)+(2/3)*3+1/9=11/11+6/9+1/9=1+7/9=

= 1 7/9

Answer 2

a) 7/9 - 1/3 + 5/6 To add or subtract fractions, we need to have a common denominator. In this case, the common denominator is 9. So we rewrite each fraction with a denominator of 9: 7/9 - 3/9 + 15/18 Now we can add and subtract the fractions: 7/9 - 3/9 + 15/18 = 4/9 + 15/18 Now, we need to find a common denominator for 9 and 18, which is 18. So we rewrite each fraction with a denominator of 18: 8/18 + 15/18 Now we can add the fractions: 8/18 + 15/18 = 23/18 So the value of the expression is 23/18.

b) 5/11 + 2/3 + 1/9 + 6/11 To add these fractions, we need to find a common denominator. In this case, the common denominator is 33. So we rewrite each fraction with a denominator of 33: 15/33 + 22/33 + 3/33 + 18/33 Now we can add the fractions: 15/33 + 22/33 + 3/33 + 18/33 = 58/33 Since 58/33 can be simplified, we can divide both the numerator and denominator by 2: 58 ÷ 2 = 29 33 ÷ 2 = 16.5 So the value of the expression is 29/16.5 or approximately 1.76.