Question

Va rog sa ma ajutați la cele 5 ex
E urgent
5 stele +Abonare +1 inimă ​

Answer 1

1. 127.87 : 2 =63.935

63.935 - 0,9=62,035

Cele 2 numere sunt :63.935 si 62,035

2. a+b=48,38

a-b=14,26

a=48,38+b

14,26+b+b=48,38

14,26+2b=48,38

2b=48,38-14,26

2b=34,12

b=34,12 : 2

b=17,06

a=14,26+17,06

a=31,32

3. a+3,6=b

bx4=c

c-13,85=18,15

c=18,15+13,85

c=32

bx4=c

bx4=32

b=32:4

b=7

a+3,6=7

a+3,6=7

a=7-3,6

a=3,4

4. a-12,7=b

bx4=c

c+2,356=3,556

c=3,556-2,356

c=1,2

bx4=1,2

b=1,2:4

b=0,3

a-12,7=b

a-12,7=0,3

a=12,7+0,3

a=13

5. 10+5=15 (bidoane)

17x5=85

10x10=100

100+85=185