Question

7. If 2x+y=5, they 4x+2y=?​

Answer 1

Answer:

10

Step-by-step explanation:

Check if

If x=2 or y=1 ......... (a)

Or x=1 or y=3......... (b)

The above value will verify the equation

2x+y= 5

So, 4x+2y =?

Take any value from a and b both give same result

4(2)+2(1)=10

Answer 2

Step-by-step explanation:

2x+y=5

${\color{red}{\underline{\underline{multiplying \: 2 \: both \: side}}}}$

2(2x+y)=2×5

$\Rightarrow$4x+2y=10