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8+3 = 7x-3x
11 = 4x
2.75 = x
maka 4x-1
= 4.2,75 - 1
= 11 - 1
= 10
3x + 8 = 7x - 3
3x - 7x = -3 - 8
-4x = -11
x = -11/-4
x = 11/4
4x-1 = 4(11/4) - 1
= 11-1
= 10
2.
Bil. pertama = x
Bil. kedua = x+2
Bil. ketiga = x+2+2 = x+4
x+x+2+x+4 = 93
3x + 6 = 93
3x = 93-6
3x = 87
x = 87/3
x = 29
Bil. terkecil = x = 29
Bil. terbesar = x+4 = 29+4 = 33
Jumlah 29+33 = 62
Soal no.2 sdh betul?? Masak 3 bilangan genap jumlahnya ganjil (93)..?!