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Verified answer
Mapel : MatematikaBab : Bilangan
x + x + 2 + x + 4 = 45
3x + 6 = 45
3x = 45 - 6
3x = 39
x = 39/3
x = 13
Bilangan pertama = x = 13
Bilangan kedua = x + 2 = 13 + 2 = 15
Bilangan ketiga = x + 4 = 13 + 4 = 17
Jumlah bilangan pertama dan ketiga
= 13 + 17
= 30
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