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5 votes
4(9x + 7) = x - 4

Help!

2 Answers

5 votes

Hey there!

When solving a equation like this we always want to start with the distributive property.

4 ( 9x + 7 ) = x - 4

36x + 28 = x - 4

Next, we want to subtract 28 from both sides.

36x + 28 = x - 4

-28 -28

Now, our equation will look like this:

36x = x - 32

Our next step is to subtract x from both sides.

36x = x - 32

-x -x

your equation will now look like this:

35x = -32

The final step is to divide -32 by 35.

-32 / 35 = -0.91

Hope this helps.

User Ysakhno
by
8.1k points
4 votes

Hey!

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Solution:

4(9x + 7) = x - 4

36x + 28 = x - 4

36x + 28 + 28 = x - 4 + 28

36x = x + (-32)

36x - x = x - (-24) - x

35x = -32

35x/35 = -32/35

x = -32/35

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Answer:

x = -32/35

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Hope This Helped! Good Luck!

User Kiky
by
7.9k points

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