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lesya [120]
3 years ago
12

Select all operations which require a common denominator to simplify. (Check all that apply)

Mathematics
1 answer:
katrin2010 [14]3 years ago
7 0

Answer:

Step-by-step explanation:

Addition and Subtraction require common denominator to simplify

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Answer:

A. 29

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Step-by-step explanation:

A. 180 - 122 = 58

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B. 180 - 37 = 143

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5 x 11 = 55

8 x 11 = 88

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C. the small box in a triangle means right angle = 90

90 - 68 = 22

(2x - 2) we subtract before finding out what x is

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2x = 20 divide by 2  = 10

x is equal to 10

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D. to find the total, you must figure out what each equation is to add them up to make 180.

(8x + 3) + (2x + 9) + 4x = 180

add up the numbers with x and the numbers without them

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subtract 180 - 12 = 168

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