Question

solve 3x+y=8,x-y=4 in any method

Answer 1

Answer:

3×+y=8,x-y=4

Step-by-step explanation:

3×+×+y-y=8+4=4×=12=×=12÷4=3

Answer 2

Step-by-step explanation:

$\Huge\red{\mathfrak{ Answer }}$

3x+y= 8

=>3x= 8-y

=> x= 8-y/3

Putting x= 8-y/3 in x-y= 4 we have

8-y/3-y= 4

=> 8-y-3y/3= 4

=> -4y+8= 12

=> -4y= 12-8

=> -4y= 4

=>y= 4/-4

=> y = -1

then x = 8-(-1)/3= 8+1/3= 9/3= 3

So

x= 3

y= -1

hope it helps ✌