-x+11=-2.3+x
add x to each side
+x-x+11=-2.3+x+x
11 = -2.3 + 2x
add 2.3 to each side
11+2.3 = 2.3-2.3 + 2x
13.3 = 2x
divide by 2 on each side
13.3/2 = 2x/2
x= 6.65
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