Question

5) calcule o valor numerico de 4x+z para a) x= +2 e z= -1 b) x= -5 e z= 0 c) x=+5 e z = +2 d) x= - 10 e z=+3

Answer 1

a) 4.2+(-1)= 7
b) 4.(-5)+0= -20
c) 4.5+2= 22
d) 4.(-10)+3 = -37

Answer 2

a) 4.2+(-1)
8-1
7

b)4. (-5) + 0
-20

c)4.5+2
22

d) 4. (-10) +3
-40+3
-37