Question

find the solve ,by substitution method;x+y=4; 3x_2y=_3
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Answer 1

Answer:

$x = 1 \y = 3$

Explanation

x + y =4

x=4 - y --------1

Now,

put x= 4 - y..

3x - 2y = - 3

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

12 - 5y = - 3

- 5y = - 3 - 12

-5y = - 15

y = 3.

Then, put y = 3 in enq 1..

x+y = 4

x + 3 = 4

x = 4 - 3

x = 1 ...

The solution set (x,y) is ( 1,3)

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