Question

me ajuda e realizar a atividade de matemática!!​

Answer 1

Resposta:

01) 7kg.

02)

a) x + 4 = 10

x + 4 - 4 = 0

x = 10 - 4

x = 6

b) x + 1 = 9

x + 1 - 1 = 0

x = 9 - 1

x = 8

c) x - 2 = 8

x - 2 + 2 = 0

x = 8 + 2

x = 10

d) x + 3 = 3

x + 3 - 3 = 0

x = 3 - 3

x = 0

e) x + 7 = 2

x + 7 - 7 = 0

x = 2 - 7

x = - 5

f) x + 9 = - 1

x + 9 - 9 = 0

x = - 1 - 9

x = - 10

g) x - 8 = - 10

x - 8 + 8 = 0

x = - 10 + 8

x = - 2

h) 10 + x = 15

10 + x - 10 = 0

x = 15 - 10

x = 5

i) 17 + x = 13

17 + x - 17 = 0

x = 13 - 17

x = - 4

03)

a) 4x = 28

x = 28÷4

x = 7

b) 9x = 18

x = 18÷9

x = 7

c) 5x = - 20

x = - 20÷4

x = - 4

d) 7x = - 7

x = - 7÷7

x = - 1

e) 2x = 48

x = 48÷2

x = 24

f) 35x = - 70

x = - 70÷35

x = - 2