not sure need help

Answer: x=114
Step-by-step explanation:
To solve for x, we want to isolate x.
[tex]\frac{0.2x-1.8}{5}=4.2[/tex] [multiply both sides by 5]
[tex]0.2x-1.8=21[/tex] [add both sides by 1.8]
[tex]0.2x=22.8[/tex] [divide both sides by 0.2]
[tex]x=114[/tex]
Now, we know that x=114.