Question

Add. write your answer in simplest form.
-4 _/135 + 7 _/15

Answer 1

$\huge\quad\qquad\underline{{\sf Answer}}$

Let's solve ~

$\qquad \sf  \dashrightarrow \: - 4 \sqrt{135} + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \: - 4 \sqrt{5 \times3 \times 3 \times 3} + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \:( - 4 \times 3) \sqrt{5 \times 3} + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \: - 12 \sqrt{15 } + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \: - 5 \sqrt{15}$