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What is the value of y in the equation 5x + 2y = 20, when x = 0.3?

User Mr Baloon
by
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2 Answers

4 votes
Y=9.25 because 5x0.3=1.5 you move constents to the right hand side and it becomes -1.5 then you do the rest and the answers is 9.25
User Scoolnico
by
5.3k points
3 votes

Hi there! Hopefully this helps!

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5(0.3) + 2y = 20

Answer: Y = 9.25.

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| 5(0.3) + 2y = 20

| Multiply 5 and 0.3 to get 1.5

\/

1.5 + 2y = 20

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We subtract 1.5 from both sides.

2y = 20 - 1.5

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Subtract 1.5 from 20 to get 18.5.

2y = 18.5

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Divide both sides by 2.


y = (18.5)/(2)

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Expand
(18.5)/(2) = 9.25 by multiplying both numerator and the denominator by 10.


y =(185)/(20)

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Reduce the fraction
(185)/(20) = 9.25 to lowest terms by extracting and canceling out 5.


y =(37)/(4).

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(37)/(4) = 9.25 in decimal form.

User Hamedkh
by
4.7k points