Question

a)31 - 15.x = 0
b).x?- 2x = 0​

Answer 1

a)

$31-15x=0\\31-15x-31=0-31\\-15x=-31\\\frac{-15x}{-15}=\frac{-31}{-15}\\x=\frac{31}{15}$

• x = 31/15

b)

$x-2x=0\\-x=0\\\frac{-x}{-1}=\frac{0}{-1}\\x=0$

• x = 0