August 2018 1 58 Report
Tolong di bantu ya kakak yg tau jawabanya dan kasitau caranya.
1.6x+7y-5z di kurangi 2x-3y+4z=
2.9p-2q+9r dan 4p+4q-6r=
3.2ab+3bc+4ac dan -4bc-2ac-5ab=
4.sederhanakan penjumlahan 5n-7m+11mn dan 15mn-4m+2n=
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