What property is used to say that the expressions 5x + 7 - 2x is equivalent to the expression 5x - 2x + 7? commutative, distributive, associative or identity

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists