August 2018 1 43 Report
Tentukan hasil penjumlahan
a. x+2y-z dan 2x-y+3z
b. 5x(8y-9z) dari 8y (5x-9z)
c. x(-2y+3)dari 2-10x+15xy

Tolong bantu yah, yg mana aja boleh dijawab, tapi pake caranya:D
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