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10-11-2020
Mathematics

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simplify by using order of operations
3x-4+20=55

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10-11-2020

Answer:

x= 13

Step-by-step explanation:

3x-4+20= 55

combine like terms:

3x+16= 55

subtract 16 from both sides:

3x = 39

divide 3 to both sides:

x= 13

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