Question 383801
"michelle is 19 years older than her brother doug" ___ m = d + 19


"6 years fro now, michelle will be twice as old as doug" ___ m + 6 = 2(d + 6)


substituting the equivalent value for m ___ (d + 19) + 6 = 2d + 12


13 = d


substituting ___ m = (13) + 19 = 32