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921 - x + 112 = 750
-x = 750 - 921 - 112
-x = -283
x = 283
2.) x + (-235) + 673 = ??
Harusnya di "??" itu nilainya diketahui. Karena nilainya ga diketahui, jadi ga bisa diselesaikan .
921 - x + 112 = 750 ⇔ 1033 - x = 750 ⇔ x = 1033 - 750 ⇔ x = 283.
Soal nmr 2 sptnya kurang keterangan, hasil operasinya berapa?