Question

The lengths of diagonals of a rectangle are represented

Answer 1

Answer:

The answer is "45"

Explanation:

$\to 5x=7x-18\\\\\to -7x=-7x\\\\\ subtract \\\to -2x=-18\\\\\to 2x=18\\\\\to x=\frac{18}{2}\\\\\to x=9\\\\\to 5(9)=45\\\\\to 7(9)-18=63-18=45$