c+d over 3 = 2c
Solve for c

Question

c+d over 3 = 2c
Solve for c

debbieg · Answer

I interpreted the problem as:

$$\dfrac{ c+d }{ 3 }=2c$$

?

ibeyoshiii · Answer

The c+d is suppose to up above the 3

ibeyoshiii · Answer

Yes. That's right.

debbieg · Answer

Which would be the same general idea... isolate the c.

So multiply both sides by 3, then move the c terms together on one side, the non-c term (which will be the d) to the other side.

Then divide by the coefficient of c.

petiteme · Answer

if thats so, just multiply both sides by 3 :)

ibeyoshiii · Answer

Okay. Sorry. I'm trying to figure this out. Lol.

ibeyoshiii · Answer

Is
c=5c-d
right?

petiteme · Answer

$$\frac{ c + d }{ 3 } = 2c$$
multiply both side by 3
$$(3)\frac{ c+d }{ 3 } = 2c(3)$$
3 will be cancelled out so
$$c+d=6c$$
transpose c to the other side
d = 6c - c
d = 5c
then divide both sides by 5 :)
d/5 = c

debbieg · Answer

I'll do a DIFFERENT one for you as an example:

$\dfrac{ 2m+n }{ 3 }=-7m$  solve for m

$\cdot 3\dfrac{ 2m+n }{ 3 }=-7m\cdot 3$  multiply by 3 to clear the den'r

$2m+n=-21m$

$n=-23m$     subtract 2m from both sides

$-\dfrac{n}{23}=m$    divide by coefficient of m

So $m=-\dfrac{n}{23}$

ibeyoshiii · Answer

But why did you combine the m's if that's what you're solving for?