Kayce Bee
1 Answer
Bob/PKB
B(A+C)+AB'+BC'+C
Substitute numbers for A, B, and C.
A = 2, B = 3, C = 5
3(2 + 5) + (2 x 3) + (3 x 5) + 5
3(7) + 6 + 15 + 5
21 + 6 + 15 + 5
27 + 20
47
B(A+C)+AB'+BC'+C
(BA) + (BC) + AB + BC + C
2BA (AB and BA are the same) + 2BC + C
2AB + 2BC + C
(Now let's see if that's the same with the digits in there)
2 (2 x 3) + 2 (3 x 5) + 5
2 (6) + 2 (15) + 5
12 + 30 + 5 = 47
Yep, the bold type is correct
| 12 years ago. Rating: 3 | |
that line before the BOLD andswer do i write that in sentence like how you did or ?
The part above the bold with the unknowns (ABC) is how to solve the equation. I substituted the 2, 3, and 5 to validate my answer. I should have done the ABC first, then substituted the numbers to prove it.
I enjoy explaining (or trying to) how this kind of stuff works. It was impossible for me when I was in high school, but it mostly makes sense to me 100 years later :D
If you would like more explanation, ask one of our moderators to give you my email address.
I enjoy explaining (or trying to) how this kind of stuff works. It was impossible for me when I was in high school, but it mostly makes sense to me 100 years later :D
If you would like more explanation, ask one of our moderators to give you my email address.
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