Tentukan nilai x +2y?

2x+22=84
2x= 84-22
2x=62
x=31

84+54
=138

5y+2=180-138
5y=42-2
5y=40
y=8

x+2y
=31+2x8
=31+16
=47

2x + 22 = 84
2x = 62
x = 31

5y + 2 = 180 - (84 + 54)
5y = 178 - (138)
5y = 40
y = 8

2y+x= 2(8) + 31 = 47