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= 5r + 8m + 2r - 3m
= 5r + 2r + 8m - 3m
= 7r +5m
⇔ 7 robot
⇔ 5 mobil-mobilan
Semoga bener dan ngebantu..
y= mobil-mobilan
5x + 8y + 2x - 3y= 5x + 2x + 8y - 3y =7x + 5y