Question

# What‌ ‌number‌ ‌should‌ ‌be‌ ‌subtracted‌ ‌from‌ ‌$\dfrac{3}{7}$ to‌ ‌get‌ ‌$\dfrac{5}{4}$?‌

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Hint: In this question remember to use the given information to form an equation and also remember $\dfrac{3}{7} - x = \dfrac{5}{4}$ where x is the required number, the given information will help you to approach the solution of the problem.

According to the given information, we know that subtracting a number from $\dfrac{3}{7}$ we get $\dfrac{5}{4}$
So, let x be the number when it gets subtracted from $\dfrac{3}{7}$ we get $\dfrac{5}{4}$
Therefore, $\dfrac{3}{7} - x = \dfrac{5}{4}$
$\Rightarrow $$x = \dfrac{3}{7} - \dfrac{5}{4} \Rightarrow$$x = \dfrac{{12 - 35}}{{28}}$
$\Rightarrow$$x = \dfrac{{ - 23}}{{28}}$
Therefore, $\dfrac{{ - 23}}{{28}}$ is the number we required.