Question

Ex 2 repede
Va rog
D au coroana

Answer 1

$x+0,6=3*x\\x-3x=-0,6\\-2x=-0,6\\x= \frac{-0,6}{-2}\\x=0,3$
S={0,3}

Answer 2

x+0.6=3x
x+6/10=3x |•10
10x-30x=-6
20x=6
x=6/20=3/10