Question

x+y=4,2x+3y=8 alguém me ajude

Answer 1

x+y= 4
x= 4-y

2x+3y= 8
2×(4-y)+3y= 8
8-2y+3y= 8
8+y=8
8y= 8
y= 8/8
y= 1.

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