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Earn +20 ptsQ: What is the value of the expression --7?
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Continue Learning about Other Math
What is 28 divided by B plus 7?
35
What is the value of the expression 7 to the -3 power?
10
If the value of b is 7 then what is the value of expression -3b-25?
replace b with 7 so you must first multiply -3 by 7 which gives you -21. Subtract 25 more and you get -46, which is the answer.
What is the value of the expression 3-4?
7
How do you know if the original expression is equivalent to the simplified expression?
you test it by giving the letters a value say if X equals 5 and Y equals 7 then you calculate both expressions with that value. If both answers are the same, then the simplified expression is correct, or an equivalent.
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