Question

42=18-4v

I do not understand this AT ALL. If y'all could explain how to do this to me, that would be EXTREMELY helpful. Thank you!

Answer 1

42=18-4v

It's the same as

18 - 4v = 42
Subtract 18 from both sides.

-4v = 24
Divide both sides by -4
v = -6

Answer 2

I assume the instructions were to "solve"

The quest is to isolate the variable on one side of the equation
and have everything else on the other side, so ....

42=18-4v
let's add 4v to both sides
42 + 4v = 18 - 4v + 4v , resulting in the -4v+4v to cancel out
42 + 4v = 18
don't like that 42 on the left side, so
subtract 42 from both sides
42 + 4v - 42 = 18 - 42 , the 42-42 on the left cancels out
4v = - 24
I don't like the 4 in front of the 4v, would prefer to have just "v"
The 4 is "connected" to 4v by multiplication, so let's divide both sides by 4
4v/4 = -24/4

to get: v = -6

Answer 3

Thank you so much!