Question

persamaan 4a + b = 9 dan a + 4b = 6 nilai 2a - 3b adalah​

Answer 1

Penjelasan dengan langkah-langkah:

4a+b = 9 (×1) 4a+b = 9

a+4b = 6 (×4) 4a+16b = 24

-15b = -15

b = 1, maka a 4a + 1 = 9, 4a = 8, a = 2

2(2)-3(1)

4-3

= 1