1) 4/5 * 2 2/9 = 4/5 * 20/9=(4*20)/(5*9)=(4*4)/9=16/9=1 7/9
2) 1 - 1 7/9=(1 - 1) - 7/9= - 7/9
ответ: - 7/9.
ИЛИ
1 - 16/9= 9/9 - 16/9= - (16/9 - 9/9)= - 7/9.
1) 4/5 * 2 2/9 = 4/5 * 20/9=(4*20)/(5*9)=(4*4)/9=16/9=1 7/9
2) 1 - 1 7/9=(1 - 1) - 7/9= - 7/9
ответ: - 7/9.
ИЛИ
1 - 16/9= 9/9 - 16/9= - (16/9 - 9/9)= - 7/9.