Question 224434
3-(2-f)+1=2(2-f)
3-2+f+1=4-2f
f+2f=4-3+2-1
3f=2
f=2/3 ans.
Proof:
3-2+2/3+1=4-2*2/3
2+2/3=4-4/3
2-4=-4/3-2/3
-2=-6/3
-2=-2