if 8x + 5 =21, what is 3x + 4

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Expert answered|Heather71|Points 1070|

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Asked 8/31/2009 12:24:14 PM

Updated 1/28/2021 2:10:31 PM

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8x + 5 = 21
8x = 21 - 5
8x = 16
x = 16 / 8
x = 2

3x + 4 = 3 * 2 + 4 = 6 + 4 = 10

If 8x + 5 =21, 3x + 4 is 10.

Added 1/28/2021 2:10:31 PM

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