Question

$\frac{3x}{10} - \frac{1}{5} = 4$
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Answer 1

$\frac{3x}{10} - \frac{1}{5} = 4 \\\\\frac{3x}{10} - \frac{2}{10} = \frac{40}{10} \\\\\frac{3x-2}{10} = \frac{40}{10} \\\\3x - 2 = 40\\\\3x = 40 + 2 \\\\3x = 42\\\\x = 42/3\\\\x = 14$

Eternamente axllxa