Question

x+y=18 x-y=14 determine o valor

Answer 1

x+y=18
x-y=14

x=14+y

x+y=18
14+y+y=18
2y+14=18
2y=18-14
2y=4
y=4/2

y=2

x=14+y
x=14+2

x=16

Logo, X vale 16 e Y vale 2.