1/√x = 1/7
1/√x - 1/7 = 0
7 - √x
7√x = 0
7√x(7 - √x)
7 - √x = 0
√x = 7
(√x)^2 = 7^2
x = 49
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1/√x = 1/7
1/√x - 1/7 = 0
7 - √x
7√x = 0
7√x(7 - √x)
7√x = 0
7 - √x = 0
√x = 7
(√x)^2 = 7^2
x = 49