Question

Subtract 7 from two-orth of a number. The result is one-fifth of the number decreased by 3. Find the number​

Answer 1

Answer:

$13 \frac{1}{3}$

Step-by-step explanation:

Let the no. =x

then ATQ

$\frac{2}{4} x - 7 = \frac{1}{5} x - 3 \\ = \frac{2}{4} x - \frac{1}{5} x = - 3 - ( - 7) \\ = \frac{10x - 4x}{20} = - 3 + 7 \\ = \frac{6x}{20} = 4 \\ x = \frac{20 \times 4}{6} \\ = x = \frac{40}{3} = 13 \frac{1}{3}$

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