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William Hartman
Mathematics
14 July, 14:09
what is 7 (x-2) = 4 (x+1) - 21
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Adyson Proctor
14 July, 14:32
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7 (x - 2) = 4 (x + 1) - 21
7 (x) - 7 (2) = 4 (x) + 4 (1) - 21
7x - 14 = 4x + 4 - 21
7x - 14 = 4x - 17
- 4x - 4x
3x - 14 = - 17
+ 14 + 14
3x = - 3
3 3
x = - 1
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