Question

find how many solutions for this equation x+3y=9 and 2x+6y=65​

Answer 1

Answer:

47

Step-by-step explanation:

First equation,

x+3y = 9

x = 9-3y -----------(I)

Second equation,

2x+6y = 65

2(X+3y) = 65

x+3y = 65/2 --------(ii)

Now,

Substituting (I) in (ii),

=>x+3y = 65/2

=>9-3y+3y=65/2

=>9×2=65

=>65-18=0

=>47