Question

X+y=130, Then 4x=(x+y-x)/3 is

Answer 1

4X=(X+Y-X)/3 
4X=(130-X)/3
12X=130-X
13X=130
X=130/13=10
X+Y=130
10+Y=130
Y=120
4X=(X+Y-X)/3
4*10=(10+120-10) /3
40=120/3
 40=40 
Therefore,L.H.S=R.H.S

Answer 2

X + y = 130 X= 130 - y 4x = ( x + y - x ) / 3put the value of x in this eq 4(130- y) = y/3 12(130 - y ) = y 1560 - 12 y = y 13 y = 1560 Y = 120 ans Put this value in 1st eq X + 120 = 130 And we get x= 10 4x = ( x+ y - x ) / 3 4× 10 = 120 / 3 40 = 40