| The sum of three consecutive even integers is 78. What are the integers. |
Find FIRST Find SECOND Find THIRD Let F=FIRST Let S=SECOND Let T=THIRD Given F+S+T=78 Given S=F+2 Given T=F+4 F+F+2+F+4=78 Comment: Expand parentheses F+F+2+F+4=78 Comment: Substitute F+4 for S in F+F+2+F+4=78 F+F+2+F+4=78 Comment: Substitute F+2 for T in F+F+2+F+4=78 F=24 Comment Simplify Solution F=24 Solution S=26 Substitute F=24 into S=F+2 Solution T=28 Substitute F=24 into T=F+4 End |