High School

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What is the correct numerical expression for "multiply the sum of 7 and 6 by the sum of 4 and 5?"

A. 7 + 6 x 4 + 5
B. (7 + 6) x (4 + 5)
C. 7 + (6 x 4) + 5
D. 7 + 6 x (4 + 5)

Answer :

Answer:

(7+6) x (4+5)

Step-by-step explanation:

Since both 7+6 and 4+5 are being added, the parenthesis around them shows that. Parenthesis come first in solving equations, so the steps would look like:

(7+6) x (4+5)

13 x 9

177

In any other equation, the wrong numbers would be multiplied. Like option 3, what would happen would be:

7+(6x4)+5

7+24+5

36

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