Question

3x +11y=13
8x+13y=2 solve it by substitution

Answer 1

Answer:

x = -3 and y = 2

Step-by-step explanation:

From equation 1 we get,

x = 13 - 11y/3

Substituting in the second equation, we get,

8(13-11y/3) + 13y      = 2

104/3 - 88y/3 + 13y = 2

104 - 88y + 39y       = 2*3  (Multiplying on both sides by 3)

-49y                         = 6 - 104

-y                             = -98/49

y                              = 2

So, x = (13 - 11*2)/3 = -3

I hope you find the solution helpful :)