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Art [367]
3 years ago
5

Enter the number that belongs in the green box.

Mathematics
2 answers:
sweet [91]3 years ago
8 0
2x+42=4x
42=2x
21=x

Answer:x=21
viva [34]3 years ago
8 0
X=21. Hope this helps.
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Solve for k, m = 3kx/7 - 9
kap26 [50]

Answer:

(7m + 63)/3x = k

Step-by-step explanation:

<em>m=3kx/7 - 9</em>

<u><em>add 9 to both sides:</em></u>

m+ 9 = 3kx/7

<u><em>multiply both sides by 7:</em></u>

7(m+9) = 3kx

<u><em>distribute the 7:</em></u>

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<u><em>divide both sides by 3x:</em></u>

<u>(7m + 63)/3x = k</u>

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