Question

ajudeem por favoor!!!!!​

Answer 1

Resposta:

Explicação passo-a-passo:

a)2.1/2= 2x2+1/2

2.1/2=5/2

5k/2=3/7

mmc=14

35k=6

k=6/35

b)1k/2+10=14.1/2

14.1/2= 14x2+1/2

14.1/2=29/2

k/2+10=29/2

mmc=2

k+20=29

k=29-20

k=9

c)3.1/2k+4.1/3=7.2/9

7k/2+13/3=65/9

mmc=18

63k+78=130

63k=130-78

k=52/63

d)-1/5+2.1k/2=2

-1/5+5k/2=2

mmc=10

-2+25k=20

25k=20+2

k=22/25