The sum of four consecutive even numbers is 2740. What is the largest of these numbers

Even consecutive integers are 2 apart

they are

x, x+2, x+4, x+6

sum is 2740

x+x+2+x+4+x+6=2740

4x+12=2740

minus 12 both sides

4x=2728

divide both sides by 4

x=682

x+2=684

x+4=686

x+6=688

the largest is 688