Question

Cat face x+3=4x VA multumesc

Answer 1

x+3=4x
x-4x=-3
-3x=-3
x=-3:(-3)
x=1
S={1}

Answer 2

$x + 3 = 4x \\ 4x - x = 3 \\ 3x = 3 \\ x = 3 \div 3 \\ x = 1$