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2x + 3 = 11
2x=8
x=4
a. 2x+3=11
2x= 11-3
x=8/2 =4
b. 2x+2=3x-2
2x-3x=-2-2
-x = -4
x=4
c. 8+3x = x+4
3x-x =4-8
2x=-4
x=-2