Question

Nomor 17-19 mohon bantuannya yaah.

Answer 1

19. [2x+1 2] + [3 -8] ≈ 2[4 -3]
[ 4 y-1] + [6 10] ≈ 2[5 6]

jawaban:

[2x+4 -6] ≈ [8 -6]
[10 y+7] ≈ [10 12]

2x+4 ≈ 8
2x≈ 8-4
2x≈ 4
x≈ 4/2
x≈ 2

y+7 ≈ 12
y≈ 12-7
y≈ 5

C. 2 dan 5