1. 2(x+4)=10
2. 3(a+9)=12
3. 34/221
1.
Two ways of doing this, distributing, or getting rid of that 2 immediately
2(x+4)=10
2x+8=10
2x=2
x=1
or
x+4=5
2. Same here
3(a+9)=12
a+9=4
a=-5
3. Simplifies down to 2/13
+2592 
