Question

1) -2*(х-4)=0
2) 12*(7,8+х)=0
3) 23,4*|x|=0

Answer 1

$- 2( x- 4) = 0 \\ x - 4 =0 \\ x = 4$

$12(7.8 + x) = 0 \\ 7.8 + x = 0 \\ x = - 7.8$

$23.4 |x| = 0 \\ |x | = 0 \\ x = 0$