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mamaluj [8]
2 years ago
8

Write an equation and solve: Twice a number, increased by 3 is 7.

Mathematics
1 answer:
brilliants [131]2 years ago
3 0
The equation is 2x+3=7
2x +3=7
      -3  -3
2x=4
divide both sides by 2
x=2
the answer is 2
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The sum of two numbers is 40 and their difference is 6.5, what is their product? show work please
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Let b>a, 

a+b=40 so we can say a=40-b

We are told that b-a=6.5, using a found above in the equation gives us:

b-(40-b)=6.5

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2b-40=6.5

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a=40-23.25

a=16.75

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check...

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