# Change the variable

• November 28th 2006, 11:16 AM
delpreston
Change the variable

a = 1/3 (b+c)d

Express d in terms of a, b and c.

I would like to know how to solve it.

• November 28th 2006, 11:26 AM
earboth
Quote:

Originally Posted by delpreston

a = 1/3 (b+c)d

Express d in terms of a, b and c.

I would like to know how to solve it.

Hej,

$a=\frac{1}{3}(b+c)\cdot d$
1. Multiply by 3 to get rid of the fraction:
$3a=(b+c)\cdot d$
2. Divide by the bracketed term:
$\frac{3a}{b+c}= d$
3. and that's it!

EB