algerbra 1
posted by savanna .
i don't understand how to do these
1+3xx=x4+2z
3+3x(x2)=3x+4

Combine similar terms (constants; terms that end in x; etc).
In the first case, you end up with
1 + 2x = x  4 + 2z
which can be rewritten
5 + x = 2z