Question

Calcule x - y.
a) x=+6 e y=+5
b) x=_7 e y=+8
c)x=_9 e y=_5
d)x=+12 e y=_15​

Answer 1

x - y

a) x = 6 e y = 5

6 - 5 = 1

b) x = -7 e y = 8

-7 - 8 = --15

c) x = -9 e y = -5

-9 - (-5) = -9 + 5 = -4

d) x = 12 e y = -15

12 - (-15) = 12 + 15 = 27