15x+2y=4000(1)
10x=4y(2)
find value of X & Y​

x = 400

y = 1000

Step-by-step explanation:

Step 1

mult by the first equation by 2

15x + 2y = 4000                           x 2

30x + 4y = 8000

the second equation is

10x = 4y

=

10x - 4y =0

then subtract the second equation from the first one

30x + 4y = 8000

- (minus)

10x  -  4y = 0

the you will get

20x = 8000

x = 8000/20  = 400

then you will substitute value of x in any the give equation to work out the value of y

nlgqer

step-by-step