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Where should ONE pair of brackets go in $7 - 3 \times 4 - 9$ to get the greatest value?

Class 7Integer Expressions with BracketsIntegers

A $7 - (3 \times 4 - 9)$
B $(7 - 3) \times 4 - 9$
C $(7 - 3 \times 4) - 9$
D $7 - 3 \times (4 - 9)$

Step-by-Step Solution

7 - 3 \times (- 5) = 7 + 15 = 22

. The others:

4 \times 4 - 9 = 7

; 7 − 3 = 4; −5 − 9 = −14. Greatest = 22.

Answer: D)

7 - 3 \times (4 - 9)

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