Shenita P. answered • 09/12/16

Math is my passion

l= longer piece

s= shorter piece

step one: determine the equation

l+s= 78 inch board

step 2: l or longer piece= 5s because the longer piece is 5x the length of the shorter piece

step 3: replace l with 5s in original equation

step 4: 5s +s = 78 inches

step 5: 6s=78 inches

step6 divide 6 on both sides s= 13 inches for the shorter piece

let me know if you have any questions