Question 1137681
 patty is six years younger than marci.
p = m - 6
 seven years ago , their ages totaled 26.
(p-7) + (m-7) = 26
p + m - 14 = 26
p + m = 26 + 14
p + m = 40
replace p with m-6 from the 1st statement
(m-6) + m = 40
2m = 40 + 6
m = 46/2
m = 23 is Marci's age
:
I'll let you find Patty's age, check your solutions in the 2nd statement