Question

1 calcule o valor numerico das expressoes

a)x-y,para x=5 e y=-4

b) 3x +a,para x=-2 e a=-6

c)2x+m,para x=1 e m=-3

d)m-2a,para ,=3 e a=-5

Answer 1

Resposta:

x-y

5-4

1

________

3x+a

3.(-2)+(-6)

-6+(-6)

-12

________

2x+m

2.1+(-3)

2-3

-1

________

m+2a

3+2.(-5)

5.-5

-25