Question

Given equations A and B as 2/5x+y=12 and 5/2y-x=6 , respectively, which expression will eliminate the variable x?

Answer 1

Hello,

the answer is 5/2*A+B

Answer 2

Answer:

 $\frac{2}{5}$ × B + A

Step-by-step explanation:

Given equations are $\frac{2}{5}$x + y = 12 ---------(A)

and equation  $\frac{5}{2}$y - x = 6 -------------(B)

To eliminate the variable x we will multiply equation A by  $\frac{5}{2}$

and add it to equation B.

In other words, the expression that we will adopt to eliminate the variable x will be  $\frac{2}{5}$ × B + A