Question

Add the following expressions:

$6ax-2by+3cz,6by-11ax-cz$ and $10cz-2ax-3by$.

Answer 1

Given:

$6ax-2by+.3cz\dots \left(1\right)$

$6by-11ax-cz\dots \left(2\right)$

$10cz-2ax-3by\dots \left(3\right)$

Adding $\left(1\right),\left(2\right)$ and $\left(3\right)$:

$(6a-11a-2a)x+(-2b+6b-3b)y+(3c-c+10c)z$$=-7ax+by+12cz$