Hi,
I am after the answer to the following equation with all lines of working out please.
7m(m+z) - 3(5m-2z)
A father that has not done this type of equation for a long time trying to help his son !!
Thank you.
$\displaystyle 7m(m+z) - 3(5m-2z)$
Rewrite this as
$\displaystyle 7m(m+z) + (-3)(5m-2z)$
Distribute
$\displaystyle = (7m)(m) + (7m)(z) + (-3)(5m) + (-3)(-2z)$
Simplify
$\displaystyle = 7m^2 + 7mz + -15m + 6z$
Or
$\displaystyle = 7m^2 + 7mz - 15m + 6z$
At this point you would collect like terms. But there are none so you are done.
-Dan