Question

1. Encantre o valor desconhecido
A)x+ 13=84

B)y-7=106

C)2.y-8=18

D)3.x+ 9 =27

E)y+y=30

F)x÷2-9=13

G)x+x-3=71

H)Z÷5+3=48

pfv expliquem tbm ​

Answer 1

Resposta:

A) x+13=84

x = 84-13

x = 71

B)y-7=106

y=106+7

y = 113

C)2.y-8=18

2y=18+8

2y=26

y= 26/2

y= 13

D)3.x+ 9 =27

3x=27-9

3x=18

x=18/3

x= 6

E)y+y=30

2y= 30

y=30/2

y=15

F)x÷2-9=13

x/2=13+9

x/2=22

x= 22.2

x=44

G)x+x-3=71

2x-3=71

2x= 71+3

2x=74

x= 74/2

x=37

H)Z÷5+3=48

x/5= 48-3

x/5=45

x= 45.5

x = 225