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3a - 2= -a + 18
3a + a= 18 + 2
4a= 20
a= 20/4
a= 5
No. 2
1/2(4x + 2)= 3
2x + 1= 3
2x= 3 - 1
2x= 2
x= 2/2
x=1
3a+a=18+2
4a=20
a=5
2.1/2(4x+2)=3
2x+1=3
2x=3-1
2x=2
x=1