5a - b = 24, a : b = 5 : 2, dan c = 1 ( a + b ) ..... 7
Matematika
arisma
Pertanyaan
5a - b = 24, a : b = 5 : 2, dan c = 1 ( a + b ) .....
7
7
2 Jawaban
-
1. Jawaban gilangardya
1. 5a - b = 24
a : b = 5 : 2, maka 2a = 5b
2. 2a - 5b = 0
eliminasi :
25a - 5b = 120
2a - 5b = 0
23a = 120
a = 120/23
b = 48/23
c = (1/7)(a + b) = 1/7(168/23)
c = 24/23 -
2. Jawaban alfinarahma
5a - b = 24
a : b = 5 : 2, maka 2a = 5b
2. 2a - 5b = 0
eliminasi :
25a - 5b = 120
2a - 5b = 0
23a = 120
a = 120/23
b = 48/23
c = (1/7)(a + b) = 1/7(168/23)
c = 24/23