Question

Workout the following divisions:
$(49x-63)÷7$

• A. $7x+9$
• B. $7x-9$
• C. $7x-6$
• D. None

Answer 1

The correct option is B $7x-9$

We divide the given polynomial $49x-63$ by the monomial $7$ as shown below:

$\Rightarrow \frac{49x-63}{7}=\frac{49x}{7}-\frac{63}{7}=\frac{7\times 7\times x}{7}-\frac{7\times 9}{7}=7x-9$

Hence, $\frac{49x-63}{7}=7x-9$.