# Math Help - linear equation.

1. ## linear equation.

If $a+4b+9c+16d=1$

$4a+9b+16c+25d=12$

$9a+16b+25c+36d=123$

Then find $16a+25b+36c+49d =$

2. Originally Posted by jacks
If $a+4b+9c+16d=1$

$4a+9b+16c+25d=12$

$9a+16b+25c+36d=123$

Then find $16a+25b+36c+49d =$
$3\left(9a+16b+25c+36d\right)-3\left(4a+9b+16c+25d\right)+\left(a+4b+9c+16d\righ t)=\;\;?$

3. Of course, you understand that when we say "Thank You", we really mean "Blast, Archie Mead got there before me!"