How would you group the following expression to make it easier to add?
18−949+79−8
(1 point)
Responses
(18 − 8 − 9)
(18 − 8 − 9)
(8 − 18)+(49+79)
(8 − 18)+(49+79)
(18 − 8)−(949+79)
(18 − 8)−(949+79)
(18 − 9 − 8)+(−49+79)
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How would you group the following expression to make it easier to add?
18−9 4/9+7/9−8
To group the expression to make it easier to add, we would combine the fractions with the same denominators first and then simplify the whole expression. To do this, we can rewrite the expression as:
18 - (9 4/9) + 7/9 - 8
Next, we can convert the mixed number (9 4/9) to an improper fraction, which would be (85/9).
So now, the expression becomes:
18 - (85/9) + 7/9 - 8
Now that we have the fractions with the same denominators, we can add them together:
(18 - 85/9 + 7/9 - 8)
After simplifying the expression, the grouping for easier addition would be:
(18 - 85/9 + 7/9 - 8)
that answer isn't there
Apologies for the confusion. Let's try grouping the expression differently to make it easier to add.
We can rewrite the expression as:
(18 - 8) - 9 + (7/9)
Now we have two separate subtraction operations and a fraction. We can calculate the subtractions first:
10 - 9 + (7/9)
Now, we have a single subtraction and a fraction to add. We can simplify further:
1 + (7/9)
So, the grouping for easier addition would be:
(18 - 8) - 9 + (7/9) -> 10 - 9 + (7/9) -> 1 + (7/9)
How would you group the following expression to make it easier to add?
18−9 4/9+7/9−8
(1 point)
(18 − 8)−(9 4/9+7/9)
(18 − 8 − 9)
(18 − 9 − 8)+(−4/9+7/9)
(8 − 18)+(4/9+7/9)