please fast

x is 2/5, y is -4, and z is -0.2

a. x + y (these arent answers theyre questions))
_____________
b. 2x - z
_____________
c. x + y + z
_____________
d. y * x
_____________

Relax

Respuesta :

a = -3.6
b = 1
c = -3.8
d = 1.6
a. -3.6
b. 1
c. -3.8
d. -1.6