4 years ago

Mary's sister is seven years older than Mary.

1 answer:

7 0

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

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