Question

Resolva os sistemas:
a) x+y=24
x-y=10

b)x+y=12
x-y=0

c)?+?+?=5
?-?=1

d) x+y=36
x-y=16

e) x+y= -4
x-y= -16

Answer 1

A) x+x=24+10
2x= 34
X= 34:2
X= 17
X+y=24
17+y=24
Y= 24-17
Y= 8

B) x+x+12
2x=12
X=12:2
X=6
X+y=12
6+y=12
Y=12-6
Y=6

C) (não entendi)

D) x+x=16+36
2x= 52
X=52:2
X= 26

E)x+x= -4-16
2x= - 20
X= -20:2
X= 10

Espero ter ajudado ;)