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Tepung = x
Wortel = y
Tomat = z
( 14x + 17y + 4z ) - ( 4x + 3y + 3z ) = 10x + 14y + z
Jadi, tepung yang tersisa = 10 kg
wortel yang tersisa = 14 kg
tomat yang tersisa = 1 kg
12
Misalkan mobil-mobilan =x dan robot= y
5y+8x+2y-3x
=5y+2y+8x-3x
=7y+5x
yaitu ; 7 mobilmobilan dan 5 robot