Which expressions are equal to 4 when x = 7 and y = 2?

1 answer:

6 0

A. x-y-1, B. x-(6/y) and C. xy-8

A. 7-2=5
5-1=4

B.7-(6/2)
order of operations
parentheses
6/2=3
7-3=4

C. 7(2)-8
7(2)=14
14-8=4

Not D, because
7+2-4
7+2=9
9-4=5

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Step-by-step explanation:

We have given expression

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substituting values we get:

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Hope this helps!

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Answer:

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