solving equations with grouping symbols

[Guest]

some others i'm having trouble with are ones like:
4(f+3)+5=17+4f or
-3(4b-10)=1/2(-24b+60) or
y-2=1/4(3a+16)

 

[stapel]

Why all the blank space? If your work was meant to be displayed as an image, it's not showing up in my browser. Sorry.

Please edit. Thank you.

Eliz.