Question

Quanto que é 5=x+3?


72=48+x?

7=10+x?

15=x+20?

0=x+18?

-7=x+50?

Answer 1

5 = x-3

-x= -3 - 5 (-1)

x= 8

_______

72=48+x

-x = 48 - 72 (-1)

x= 24

_______

7= 10 + x

-x = 10- 7 (-1)

x= -3

_______

15 = x + 20

-x = 20 - 15 (-1)

x = -5

_______

0 = x + 18

-x = 18 (-1)

x = -18

_______

-7 = x + 50

-x = 50 + 7 (-1)

x = -57

________

<3 <3 <3