Question

Solve: 7|x| = 42
(Points : 1)
–6 or 6
6
36
No solution

Answer 1

isolate the |x| first
it is being multiplied by 7
undo the multiplication by 7 by dividing 7 on both sides

Answer 2

then use that if a>0
and |x|=a then x=a or x=-a
this is because |a|=a and |-a|=|-1|*|a|=1|a|=|a|

Answer 3

so the answer is a right

Answer 4

Yes !

Answer 5

thank you