# 3 x/8 - 3 y/5 =33/80 or 3+x/8 -(3+y/5)=33/80# or
#cancel3+x/8 -cancel3-y/5=33/80# multiplying by #80# on
both sides we get, #10 x -16 y=33 (1)#
# 4 x/7 + 4 y/5 =37/35 or 4+x/7 +4+y/5=37/35# or
#8+x/7 +y/5=37/35# multiplying by #35# on
both sides we get, #280 +5 x +7 y=37 or 5 x +7 y= -243 (2)#
Multiplying equation (2) by #2# we get, #10 x +14 y= -486 (3)#
Subtracting equation (3) from equation (1) we get,
#-16 y- 14 y = 33 -(-486) or -30 y = 519 or y = -17.3#
Putting #y=-17.3# in equation (1) we get,
#10 x -16 *(-17.3)=33 or 10 x +276.8 =33# or
#10 x =33-276.8 or 10 x= -243.8 or x = -24.38#
Solution: # x = -24.38 , y= -17.3# [Ans]
