Mathematics
chellzzzmarie
2

The sum of two numbers is 30 and their difference is 2.  Find the two numbers by writing and solving a system of equations

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(2) Answers
Jadelis1234

The numbers are 14 & 16. The equations you need to solve are: x + y = 30 x - y = 2  ==>  (redefine in terms of y)  y = x - 2 substitute into first equation x + x - 2 = 30 2x = 30 + 2 x = 32/2 = 16 16 + y = 30 30 - 16 = y = 14 x = 16 y = 14 And that's how that is done.

Glazewski343

There is a much easier way. You know the numbers are two a part. So you do 30 ÷ 2 = 15. Then find one above and one below. Thats 14 and 16. Add them together and BOOM!!!! You get 30!

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