Question 89811
X-Y=1 OR X=Y+1 NOW SUBSTITUTE (Y+1) FOR X & SOLVE FOR Y
3(Y+1)+4Y=2
3Y+3+4Y=2
7Y=2-3
7Y=-1
Y=-1/7 ANSWER.
X=-1/7+1
X=6/7 ANSWER.
PROOF
3*6/7+4*-1/7=2
18/7-4/7=2
(18-4)/7=2
14/7=2
2=2