Question

5a-6b+7 dari -8a+3b-4​

Answer 1

Jawaban:

5a+6b = 7 |x3| 15a+18b = 21

3a+4b = 5 |x5| 15a+20b = 25

_______________ -

-2b = -4

b = -4/-2

b = 2

maka,

3a+4b = 5

3a+4.2 = 5

3a+8 = 5

3a = 5-8

3a = -3

a = -3/3

a = -1

jadi, HP = {(-1,2)}

Penjelasan dengan langkah-langkah:

ok