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2x + 3 = x
Subtract 3 from both sides so that...
2x = x - 3
Subtract x from both sides so that...
2x - x = -3
Now you have to simplify the left side so that it equals...
x(2-1) = -3
Now divide both sides by (2-1), the equation should now look like...
x = -3/(2-1)
x = -3/1
x = -3
Now obviously, you could have made (2-1) into 1 and left it as 1x = -3 so x = -3, but if the inside of that equation equaled something such as... (21-13) or something, you need to know you take the entire ( ) over to the other side. Also, don't forget to check your answer
2(-3) + 3 = (-3)
solved, it equals...
-3 = -3 so it is correct.
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