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2x+6=5+3x
6=5+x
x=1
b) x + 2 /9 + x-1/3= 1 /*9
x+2+3x-3=9
4x-1=9
4x=10
x=10/4= 2½
c)5+3x /4 - 4x + 9 /3=1 3/4
5+3x /4 - 4x+9 /3= 7/4 /*12
15+9x- 16x- 36=21
21-7x=21
-7x=42
x=-6