Answer:
Step-by-step explanation:
6/24
7√7
using the ' rule of radicals '
• √a × √b ⇔ √ab
simplifying the radicals
√28 = √(4 × 7 ) = √4 × √7 = 2√7
√63 = √(9 × 7) =√9 × √7 = 3√7
√112 = √(16 × 7 ) = √16 × √7 = 4√7
substituting into the expression
3(2√7) - 5(3√7) + 4(4√7) = 6√7 - 15√7 + 16√7 = 7√7
we know that
The LCD is the LCM (least common multiple) of all the denominators.
we have



So
The LCM of
is
,
which is the multiple of the highest power of prime factors from all of the given numbers
therefore
the answer is

11x-57 is the answer. Try drawing a diagram. It’ll help.