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Why does it help to rearrange addends in Example B to show that 2.5n +9.9+(-3n) is equal to 2.5n + (-3n) + 9.9?
Question
Why does it help to rearrange
addends in Example B to show that
2.5n +9.9+(-3n) is equal to
2.5n + (-3n) + 9.9?
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Mathematics
2 years
2021-07-30T00:06:41+00:00
2021-07-30T00:06:41+00:00 1 Answers
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Answer:
You don’t really need to do it, but it helps you keep things more organized and easier to follow. Imagine if you’re doing some multi-variable equation,
2a + 5b + 4d + 3c + b + a + 2d
that looks like a mess, it’ll be easier to look at if you put all the similar variables next to each others like this:
a + 2a + b + 5b + 3c + 2d + 4d
(a + 2a) + (b + 5b) + 3c + (2d + 4d)
now you can add them up much easier.