(Х+ 5/12) - 1 1/6= 1 1/4
Х+ 5/12= 1 1/4+ 1 1/6
Х= 1 1/4+ 1 1/6 - 5/12
Х= 1 (1•3)/(4•3)+ 1 (1•2)/(6•2) - 5/12
Х= 1 3/12+ 1 2/12- 5/12
Х= 2 5/12- 5/12
Х= 2
Проверка
(2+ 5/12)- 1 1/6= 1 1/4
2 5/12- 1 1/6= 1 1/4
2 5/12- 1 (1•2)/(6•2)= 1 1/4
2 5/12- 1 2/12= 1 1/4
1 3/12= 1 1/4
1 1/4= 1 1/4
А))
5 1/2 • (4 3/20 -6,45: 3) +
1 11/17 • (7 5/6- 3 7/12)=
5,5• (4,15- 2,15)+
1 11/17• (7 (5•2)/(6•2) - 3 7/12)=
5,5• 2+ 1 11/17• (7 10/12- 3 7/12)=
11+ 1 11/17• 4 3/12=
11+ (17•1+11)/17• 4 1/4=
11+ 28/17• (4•4+1)/4=
11+ 28/17• 17/4=
Сокращаем 28 и 4 на 4; 17 и 17 на 17;
11+ 7/1• 1/1= 11+ 7= 18