Question

B)4x -20 = 4+x.........

Answer 1

$4X -20 = 4+X \\ \\ 4X-X=4+20 \\ \\ 3X=24 \\ \\ X= \dfrac{24}{3} \\ \\ \boxed{\bf X=8}\to Solucion$

Comprobamos.

$4X -20 = 4+X \\ \\ 4(8)-20=4+8 \\ \\ 32-20=12 \\ \\ \boxed{\boxed{\bf 12=12}}\quad\checkmark\checkmark Es\ Correcto\ !! \\ \\ Saludos\ Desde\ Venezuela$