soal matriks bantu jawab pakai cara ^o^

a][
2a + 3 = 5 --> a = 1
5a - b = 10
b = 5.1 - 10 = -5

b][
a + b = 4a - 5b
3a - 6b = 0
a = 2b

2a - 15 = 6a + 7b
4a + 7b = -15
4(2b) + 7b = -15
15b = -15
b = -1 --> a = 2b = -2

c][
3a = -12 ---> a = -4
2b = 9 ---> b = 9/2

d][
6a - 1 = 3b + 2
6a - 3b = 3
2a - b = 1
b = 2a - 1

4a + 5 = 2a
2a = -5
a = -5/2
b = 2a - 1 = -5 - 1 = -6

e][
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