Question

6)If 4x+6y =12. and 6x+4y=8 then what is the value of x+y ? *​

Answer 1

Answer:

x+y =2

step by step explanation:-

4x+6y =12

+ 6x+4y =8

10x+10y =20

divided by 10

x+y = 2

Answer 2

Given:

Equation 1 -

Equation 2 -

To Find:

Value of x + y

Solution

4x + 6y = 12 - ( Multiply by 3 )

6x + 4y = 8 - ( Multiply by 2)

12x + 18y = 36

12x + 8y = 16

-      -         -

On solving we will get -

10y = 20

y = 20/10

y = 2

Substituting value of y in equation 1 -

4x + 6(2) = 12

4x +12 = 12

4x = 0

x = 0

Now since x = 0 and y = 2.

Thus, - x +y will be -

= 0 + 2

= 2

Answer: Value of x + y is 2.