If 2x + y = 7 and x + 2y = 5, then 10xy/3 =?
If 2x + y = 7 and x + 2y = 5, then 10xy/3 =?
Answer/Solution
A) 10
Steps/Work
2*(x+2y = 5) equals 2x+4y=10
2x+4y=10
- 2x + y= 7
= 3y=3
Therefore Y = 1
Plug and solve...
2x + 1 = 7
2x=6
x=3
(10*3*1)/3
= 30/3
=10
A
2x+4y=10
- 2x + y= 7
= 3y=3
Therefore Y = 1
Plug and solve...
2x + 1 = 7
2x=6
x=3
(10*3*1)/3
= 30/3
=10
A