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aev [14]
3 years ago
6

4x + 5x - 30= 180 find the value of x

Mathematics
1 answer:
slega [8]3 years ago
7 0

Answer:

4x + 5x - 30 = 180 \\ collect \: like \: terms \\ 4x + 5x = 180 + 30 \\ 9x = 210 \\ x =  \frac{210}{9}  \\ x = 23 \frac{1}{3}

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Let m = the amount books Rachel sold on Monday.
then t = the amount books Rachel sold on Tuesday.<span>
then w = </span><span>the amount books Rachel sold on Wednesday.

On Tuesday she sold twice as she did on Monday.
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On Wednesday she sold 6 fewer books than she did on Tuesday
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Now for the fun.

t = m * 2
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Substitute t for real value

w = m * 2 - 6

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w - 6 = m * 2 <-- Transpose the 6
(w-6)/2 = m <-- Transpose the 2.
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