Question 338277
X+Y=35 OR X=35-Y
4X=5Y-4
4(35-Y)=5Y-4
140-4Y=5Y-4
-4Y-5Y=-4-140
-9Y=-144
Y=-144/-9
Y=16 ANS.
X=35-16=19 ANS.
PROOF:
4*19=5*16-4
76=80-4
76=76