Question

by substituting x =7 solve 3x-1/5-x/7=3​

Answer 1

Step-by-step explanation:

$3x - \frac{1}{5} - \frac{x}{7} \\ \\ put \: x = 7 \\ \\ 21 - \frac{1}{5} - \frac{7}{7} \\ = 20 - \frac{1}{5} \\ = 20 - 0.2 \\ = 19.8$

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Answer 2

$\frac{3x - 7}{1} - \frac{x}{7} = 3$

$x = 7$

$\frac{3(7) }{1} - \frac{7}{7} = 3$

$\frac{21}{1} - \frac{7}{7} = 3$

$\frac{147 - 9}{7} = 3$

$2.33≠ 3$