Lars bought 3 jars of marbles. each jar has 42 marbles, of which 1/3 are red. lars can use the calculation below to find the total number of red marbles. 3×(1/3×42) how can lars simplify the calculation using only the associative property of multiplication? drag and drop the appropriate number or expression into each box. : x 1/3 3 42 (3 x 1/3) (1/3 x 42)