Diketahui 1/4 x+2/3 y =2 1/2 dan 3/4 x+1/2 y=3.Nilai 3x+2y= A.10. B.11. C.12. D.13

[tex] \frac{x}{4} + \frac{y}{3}=2 \frac{1}{2} [/tex]
[tex] \frac{3.x+4.2y}{12}= \frac{5}{2} [/tex]
[tex]3x+8y=12. \frac{5}2} [/tex]
[tex]3x+8y=30[/tex]
[tex] \frac{3x}{4}+ \frac{y}{2}=3 [/tex][tex] \frac{2.3x+4.y}{8}=3 [/tex]
[tex]6x+4y=24[/tex][tex](6x+4y=24)x2=12x+8y=48[/tex]

12x+8y=48
3x+8y=30
₋₋₋₋₋₋₋₋₋₋₋₋₋ ₋
9x=18
x=2

3x+8y=30
3.2+8y=30
8y=24
y=3

Maka nilai dari 3.x+2.y=3.2+2.3=6+6=12