4(x+7)=8x-20
4x+28=8x-20
28=4x-20
48=4x
x=12
45.5 acres of land can be farmed and 24.5 cannot be farmed.
Answer:
The upper one is 8, the lower one is 6
As we know y=3/4x-3
Let's put it in the second equation
3/4x-3=1/4x+1
3/4 x -1/4 x = 1+3
2/4 x = 4
X= 4*4/2
x=8
Put x= 8 in first equation
y= 3/4 *8 -3
y=6-3
y=3
Check the answer
3=3/4 *8 -3
3=6-3
3=3
Correct
So(y, x) = (3,8)
Because x=8 and y=3
