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Arisa [49]
3 years ago
5

5x+8+3x+4=-40+4 plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss

sssssssssssssss
Mathematics
1 answer:
loris [4]3 years ago
7 0

5

+

8

+

3

+

4

=

−

4

0

+

4

5x+8+3x+4=-40+4

5x+8+3x+4=−40+4

Solve

1

Add the numbers

5

+

8

+

3

+

4

=

−

4

0

+

4

5x+{\color{#c92786}{8}}+3x+{\color{#c92786}{4}}=-40+4

5x+8+3x+4=−40+4

5

+

1

2

+

3

=

−

4

0

+

4

5x+{\color{#c92786}{12}}+3x=-40+4

5x+12+3x=−40+4

2

Combine like terms

3

Add the numbers

4 more steps

Solution

=

−

6

x=-6

x=−6

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___________________

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Step-by-step explanation:

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If y varies directly as x and y = 21 when x = 5, find x when y = 42.
Lorico [155]

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<u>Step-by-step explanation:</u>

varies directly means: \frac{y}{x} = k

Step 1: solve for k   ⇒  \frac{21}{5} = k

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