How about: 2+6+8+12 = 28 as one example
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List numbers that multiply to make 28 and find their sums. Since negative times a negative is positive, list the negatives. -1, -28 = -29 -2, -14 = -15 -4, -7 = -11 Aha! -4 and -7 multiply to make 28 and add to -11; therefore, -4 and -7 are the two numbers.
A lot of 4 numbers make 28. You could have 4x7, or 2x6 + 2x8 or even 1+2+3+22 etc. The permuntations are vast.
The numbers are 4 and 24 because 24/4 = 6 and 4+24 = 28
4/7-3/4= firs you want to get both numbers to have the same denominator and 7 and 4 are both multiples of 28, so make 28 the demoninator. 4/7-3/4= ?/28-?/28 <<< so what times 7 gives you 28 and what times 4 gives you 28? you use that answer to replace the question mark, but you have to multiply it by the numbers that were already in the numerator (3 and 4). so now you have 4(4)/28-3(7)/28= 16/28-21/28=-5/28
To find two numbers that multiply to 28, you can start by listing the factors of 28: 1, 2, 4, 7, 14, 28. The pairs that multiply to 28 are 1 x 28, 2 x 14, and 4 x 7. Therefore, the two numbers that multiply to 28 are 4 and 7.