Question

Mary's sister is seven years older than Mary.

Their combined ages add up to 35 how old is Mary?



Sorry problem by writing in solving an equation!!

Please help!!!!

Answer 1

35-7 which would equal 28, but that answer wouldn't be exactly correct, as this isn't in correct formation. An equation would be 2x + 7 = 35.

35-7= 28 divided by 2(2x) would equal 14
So Mary is 14 and her sister is 21.


21 + 14 equals 35