Question 159370
1)  
.3n-.2=.2n+1
.3n-.2n=1+.2
.1n=1.2
n=1.2/.1
=12
.
4) 
3|2x+6|=24
|2x+6|=8
2x+6=8
2x=2
x=1
2x+6=-8
2x=-14
x=-7
x=1, x=-8
.
Ed