5 = 7 by 2x + 1
the "x" is not multiply but the variable x
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Answer:
1/5
Step-by-step explanation:
5 = 7/2x+1
(2x+1)5 = 7
10x +5 = 7
10x = 7-5
10x = 2
x = 2/10
x = 1/5
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