Consider this system of equations: 2/3x+3/5y=12(equation A) 5/2y-3x=6(equation B) The solution for the system of equations is .
A.(1118/47,396/47) B.(33/13,50/13) C.(99/13,150/13)D.(8,12)
(2/3)x + (3/5)y = 12
- 3x + (5/2)y = 6
Multiply the first equation through by 15 and the second through by 2
10x + 9y = 180
-6x + 5y = 12
Multiply the first equation through by 6 and the second through by 10
60x + 54y = 1080
-60x + 50y = 120 add these
104y = 1200
y = 1200 / 104 = 150 / 13
And
-6x + 5(150/13) = 12
-6x = 12 - 750/13
-6x = ( 156 - 750) / 13
x = (156 - 750) / (-6 *13) = 99 / 13