9. Eric guessed that Troop A was going to have 23 members in 2011 when they actually had 20. How much was Eric off by in his est
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I'm assuming you need to evaluate/simplify the equation, so you need to isolate/get x by itself in the equation:
2(3x + 1) = 11 Divide by 2 on both sides
3x + 1 = [11/2 or 5.5] Subtract by 1 on both sides
[make the denominator the same to combine fractions]
3x = Divide by 3 on both sides
x =