How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8(1 point)
Responses
(18 − 9 − 8) + (−4/9 + 7/9)
Left Parenthesis 18 minus 9 minus 8 Right Parenthesis plus Left Parenthesis negative Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 Right Parenthesis
(18 − 8 − 9)
Left Parenthesis 18 minus 8 minus 9 Right Parenthesis
(18 − 8) + (−9 4/9 + 7/9)
Left Parenthesis 18 minus 8 Right Parenthesis plus Left Parenthesis negative 9 Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 End Fraction Right Parenthesis
(8 − 18) + (4/9 + 7/9)
(18 - 8) + (-9 + 4/9 + 7/9)
To group the expression in the easiest way to add, you should use the grouping: (18 - 8) + (-9 4/9 + 7/9). This involves subtracting 8 from 18 first, and then adding the remaining terms.
To group the expression to make it easiest to add, we need to prioritize adding numbers that are close to each other. In this case, we can first add the numbers 18 and -949, and then add the result to 79, and finally subtract 8.
So the correct grouping would be:
(18 - 949) + 79 - 8
This grouping allows us to perform the additions and subtractions in a sequential manner, making it easier to solve the expression.