tolong bantu jawab pertanyaan ini ya

maka 5A + 5B = 5(2000) + 5(1000) = 10.000 + 5.000 = 15.000

#semoga membantu

6a + 3B = 15 000. x 1
3a + 4B = 10 000. x 2

6a + 3B = 15 000
6a + 8B = 20 000
_______________ _
_ 5B = _ 5000
B = _ 5000/ _ 5
B = 1000
6a + 3B = 15 000
6a + ( 3 x 1000) = 15 000
6a = 15 000 _ 3000
6a = 12000
a = 12000/6
a = 2000

dit 5a + 5B
(5 x 2000) + ( 5 x 1000)
10 000 + 5000 = 15 000