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Anonymous
X=5
Y= 9
2x + 11= ?
2(5)+11=?
10+11= 21
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2x+5=11 2x=6 x=3
2x-11
2x-5=3x+6 -5-6=3x-2x -11=x x=-11
2x - 6 = x + 5 Isolate x. 2x - x = 6 + 5 x = 11
5x+6-2x=-5-x 3x+6=-5-x 4x=-11 x=11/-4