ilikepizza Mar 17, 2019

edited by
ilikepizza
Mar 17, 2019

edited by ilikepizza Mar 17, 2019

edited by ilikepizza Mar 17, 2019

edited by ilikepizza Mar 17, 2019

edited by ilikepizza Mar 17, 2019

edited by ilikepizza Mar 17, 2019

edited by ilikepizza Mar 17, 2019

#1**+2 **

Best Answer

First, we plug the value of 2 for x.

This leads to 3(2)+y=a and 2(2)+5y=2a

or 6+y=a and 4+5y=2a

Rearranging, we have a-y=6 and 2a-5y=4

Multiplying the first expression by 5, we get 5a-5y=30 and 2a-5y=4.

3a=26 and a=26/3.

tertre Mar 17, 2019

#3**+1 **

We can immediately multiply the first equation by 5, so we have the two equations:

15x + 5y = 5a

2x + 5y = 2a

Subtract the second from the first:

13x = 3a

Rearrange and divide by 3:

a = (13/3)*x

Substiute 2 for x:

a = (13/3)*2 or a = 26/3

(tertre added when he/she should have subtracted).

Alan Mar 17, 2019