Question

ax+ay+az+bc=(ac+ad+fc+fy)5

Answer 1

$ax+ay+az+bc=(ac+ad+fc+fy)*5$

Vamos fatorar os termos:

$ax + a*(y + z) + cb = (a*(c+d)+fc +fy)*5 \\ \\ a * (x + y + z) + cb = a*(5c +5d) +5fc +5fy \\ \\ ax - a*((5c +5d - (y + z) -a*(cb-(5fc + 5fy)) \\ \\ -(((5c +5d - (x+y+z))*a - (cb -(5fc + 5fy))) \\ \\ -5c - 5d + (x - y -z)*a + (-cb +(-5fc - 5fy))$