Question

Solve for M.
E=cm/r

A. m=e+r/c
B. m=er/c
C. m=E-rc
D. m=e+rc

Answer 1

E = cm/r

Multiply r to both sides, what do you get?

Answer 2

uhh

Answer 3

what do you mean?

Answer 4

Multiply 'r' to both sides. Multiply it to E.

Answer 5

im still confused...

Answer 6

\(E = \dfrac{cm}{r}\)

To solve for m, you have to get it by itself on one side of the equal sign.

To do that you have to eliminate c and r and put them at the other side.

r is being divided by m, so you have to do the opposite to get it on the other side, which is multiply. Multiplying r to both sides will remove the division, and give you \(Er = cm\).

Now can you divide c to both sides?

Answer 7

uhhh.... im still confused.

Answer 8

It's just like solving a normal equation, but instead of numbers, you have letters.

Answer 9

im still confused on how to solve t :(

Answer 10

it*

Answer 11

do you mena Er/c and cm/c?

Answer 12

mean*

Answer 13

What are you confused on?

Answer 14

i dont know specifically, im just confused

Answer 15

would it be B?

Answer 16

are you still there?

Answer 17

Yes, it would because you have to divide c to both sides which gives you \(\dfrac{Er}{c} = m\).

Answer 18

@jacobwat

Answer 19

ok i get it now. thank you

Answer 20

No problem.