Question

Hari ini un,,bantuin yak!

Answer 1

Verified answer

2x - 3y = a
3x + y = -5 + b

substitusikan x dan y ke 4 dan 3 dan selesaikan masing masing

2(4) - 3(3) = a
8 - 9 = a
a = -1

3(4) + 3 = -5a + b
12 + 3 = -5(-1) + b
15 = 5 + b
b = 15 - 5
b = 10

maka:
a + b
= -1 + 10
= 9 (B.)