Question

3x+y =2 , 2x-3y =5 by substitution

Answer 1

Answer:

3x+y=2‐----------(1)

2x-3y=5--------(2)

by transposition in (1)

we get,

3x=2-y

therefore,

x=(2-y)/3---------(3)

Now, putting (3) in (2) we get,

2(2-y)/3 - 3y=5

=(4-2y/3) - 3y=5

= (4-2y-9y) / 3 = 5

= (4-11y) / 3 = 5

= (4-11y) = 15

This gives us,

-11y = 11

therefore, y = -1

therefore, 3x = 2-y or

3x = 3

therefore, x = 1