Question

determine o valor numerico de 5 m + 2x para os seguintes casos :


a) m = 2 e x = 3

b) m = 4 e x = - 7

c) m = - 4 e x = 9

d) m = - 1 e x = - 2

e) m= 8 e x = - 2

f) m = 3 e x = 1/2

Answer 1

Resposta:

a) 5m + 2x

5(2) + 2(3)

10 + 6

16

b) 5m + 2x

5(4) + 2(-7)

20 - 14

6

c) 5m + 2x

5(-4) + 2(9)

-20 + 18

-2

d) 5m + 2x

5(-1) + 2(-2)

5 - 4

1

e) 5m +2x

5(8) + 2(-2)

40 - 4

36

f) 5m + 2x

5(3) + 2(1/2)

15 + 2(0,5)

15 + 1

16

Answer 2

Resposta:

5m + 2x

a) 2.5 + 3.2

10 + 6

16

b) 4.5 + 2.(-7)

20 + (-14)

6

c) 5.(-4) + 2.9

-20 + 18

-2

d) 5.(-1) + 2.(-2)

-5 + (-4)

-9

e) 8.5 + 2.(-10)

40 + (-20)

20

f) 5.3 + 2.0,5

15 + 1

16