Hello!
According to the Distributive Property (which states: a(b+c)=ab+ac) we should:
- Distribute 6 by multiplying it times all the terms inside the parentheses.
6*10+6*z+6*3
60+6z+18
6z+78
And we're done!
Hope everything is clear.
Let me know if you have any questions!
~An Emotional Helper~
:-)