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2a = b - 3
a = 10 + b
Substitusikan :
2a = b - 3
2(10 + b) = b - 3
20 + 2b = b - 3
2b - b = -3 - 20
b = -23
masukan nilai b :
a = 10 + b
a = 10 + (-23)
a = 10 - 23
a = -13
Jadi, bilangan pertama = -13 dan bilangan kedua = -23
Semoga membantu :)