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11111nata11111 [884]
3 years ago
11

30 ponts 9x+1-7x=20 what does x equal?

Mathematics
1 answer:
sp2606 [1]3 years ago
8 0

Answer:

x = 9.5

Step-by-step explanation:

Combine like terms

9x + 1 - 7x = 20 \\ 2x + 1 = 20

Now simply solve

2x + 1 = 20 \\ 2x = 20 - 1 \\ 2x = 19 \\  \frac{2x}{2}  =  \frac{19}{2}  \\ x = 9.5

hope this helps you.

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The answer is 4x + 5y.

Here, what needs to be done is to combine like terms.

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4 years ago
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3 years ago
What’s the value of x for a-d?
patriot [66]

Answer:

a = 76 b = 22 c = 58 d = 68

Step-by-step explanation:

A. 180 - 133 = 47

so you have two angles found, which is 57 and 47. Add them together and subtract from 180. You get 76

B. 68 + 90 = 158

You subtract the 158 from 180 and get 22

C. This took some guess work, but when you multiply 58 by 2 you get 116. When subtracted from 180 you get 64. If you add 58 + 58 + 64, you get 180, so this made sense

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Sorry, not the best at explanations. Hope that helped

8 0
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