Solve 3x + 5y = 48 and - 5x + y = 4

- 5x + y = 4

- 5x + y+5x= 4+5x

y= 4+5x

3x + 5y = 48

3x + 5( 4+5x) = 48

3x + 5( 4) (5)(+5x) = 48

3x+20+25x=48

28x+20=48

28x+20-20=48-20

28x=28

28x/28=28/28

x=1

y= 4+5x

y= 4+5(1)

y=4+5

Y=9