Question 222715
allow me to translate from English to Algebra ...


"The ages of John & Mary total 27 years" ___ j + m = 27


"Mary's age plus twice John's age is 40" ___ m + 2j = 40


subtracting the 1st eqn from the 2nd ___ j = 13


substituting ___ 13 + m = 27 ___ m = 14