Question

X/7+y/3=5;x/2-y/9=6 by subsitution method

Answer 1

Answer:

x=7 and y=9

Step-by-step explanation:

x/7+y/3=5

∴3x+7y=105

∴        x=(105-7y)/3      ·······(1)

Now put the value of x in second equation,

∴(105-7y)/6-y/9=6

∴                   y=9

Put the value of y in equation (1)

∴                     x=7

Answer 2

X/7 +y/3 = 5

X/7 =5-y/3

X= 35-7y/3

Now,

X/2-y/9=6

Putting the value of x

35-7y/6 =6

35-7y =0

35 =7y

So y=35/7=5

Y=5 and x=0