Question

if
$if \frac{ax + by}{x + y } = \frac{bx + az}{x + z} = \frac{ay + bz}{y + z} and x + y + z = nonzero number then show that \frac{a + b}{2}$

Answer 1

a!ask
$2 \times 311 \times \frac{?}{?} \times \frac{?}{?}$
math