Question

x+y=4
2x-3y=3
alguem pode me ajudar

Answer 1

x + y = 4 .(3)
2x-3y= 3

3x+3y =12
2x-3y = 3
--------------
5x = 15
x = 15/5
x = 3

x+y = 4
3+y = 4
y = 4-3
y = 1

S: {3;1}

Answer 2

olá,
x+y=4 >>> x=4-y
2x-3y=3
2×(4-y)-3y=3
8-2y-3y=3
-5y=-5
y=1

x=4-y
x=4-1
x=3