Пошаговое объяснение:
1)х-1 1/5=5 1/2;
x=5 1/2 + 1 1/5;
x=5 5/10 + 1 2/10;
x=6 7/10 = 6,7.
***
2)2 1/3+х=3 1/6;
x=3 1/6 - 2 1/3;
x= 3 1/6 - 2 2/6;
x=1 (1-2)/6;
x=(6+1-2)/6;
x=5/6.
3)х÷3=1 2/3;
x= 1 2/3 *3;
x=5/3 * 3;
x=5.
4) 4х=12 4/5;
x = 64/5 : 4;
x=64/5 * 1/4;
x= 64/20;
x=3,2.
5)9/32÷х=3/16;
x=9/32 : 3/16;
x=9/32 * 16/3;
x=3/2 = 1 1/2;
x=1,5.
6)х÷5/6=2 2/5;
x=2 2/5 * 5/6;
x= 12/5 * 5/6;
x=12*5/5*6;
x=2.
7) 4 2/7-х=3 2/7;
- x=3 2/7 - 4 2/7;
-x = - (4 2/7 - 3 2/7)
x= 1.
8)5 2/9*х=0;
x= 0.
Пошаговое объяснение:
1)х-1 1/5=5 1/2;
x=5 1/2 + 1 1/5;
x=5 5/10 + 1 2/10;
x=6 7/10 = 6,7.
***
2)2 1/3+х=3 1/6;
x=3 1/6 - 2 1/3;
x= 3 1/6 - 2 2/6;
x=1 (1-2)/6;
x=(6+1-2)/6;
x=5/6.
***
3)х÷3=1 2/3;
x= 1 2/3 *3;
x=5/3 * 3;
x=5.
***
4) 4х=12 4/5;
x = 64/5 : 4;
x=64/5 * 1/4;
x= 64/20;
x=3,2.
***
5)9/32÷х=3/16;
x=9/32 : 3/16;
x=9/32 * 16/3;
x=3/2 = 1 1/2;
x=1,5.
***
6)х÷5/6=2 2/5;
x=2 2/5 * 5/6;
x= 12/5 * 5/6;
x=12*5/5*6;
x=2.
***
7) 4 2/7-х=3 2/7;
- x=3 2/7 - 4 2/7;
-x = - (4 2/7 - 3 2/7)
x= 1.
***
8)5 2/9*х=0;
x= 0.