dibantu donk sebentar lagi un nih ????......

[3x + 4y = 27600 ]*2 = 6x +8y = 55200
[2x + 5y = 28200 ]*3 = 6x +15y= 84600
______________________________ _
-7y = -29400
y = 4200
2x + 5(4200)=28200
2x + 21000 = 28200
x = 7200/2
x= 3600
jadi, 6x + y = 6. 3600 + 4200
= 21600 + 4200
= 25800

3x+4y = 27.600 |×2|6x+8y= 55.200
2x+5y = 28.200|x3|6x+15y=84.600
-7y=-29.400
y=4.200
3x+4(4.200) = 27.600
3x = 10.800
x = 3.600
6x+y =6(3.600)+4.200 = 25.800
jadi jawabannya (d) 25.800
semoga bermanfaat