Question

Solve for y in the equation –11y = –143.
A.
–13
B.
–12
C.
12
D.
13

Answer 1

@Astrophysics

Answer 2

remember that to isolate a variable from a constant you need to divide it off from both sides.

Answer 3

Hm...?

Answer 4

\[ax=b\]
\[\frac{ax}a=\frac{b}a\]
\[x=\frac{b}a\]

Answer 5

Hey so for this problem, you want to isolate y, meaning get y on its own.

To do this you have to get rid of the -11, since we are multiplying -11 here by y we have to do it's opposite which is division! And that will cancel it out.

\[\frac{ -11y }{ -11 } = \frac{ -143 }{ -11 }\]

You see I did it to both sides, because what you do to one side, you must also do it to the other. So we can cancel the -11/-11 on the left because that just = 1 and 1*y = y, and now we just divide as you would normally on the right side to get 13, remember negative divided by negative = positive and negative multiplied by negative is also positive.

\[y = 13\]

Answer 6

Oh I get it now!

Answer 7

Great! :)