Add, subtract, multiply or divide both sides of the equation by the same amount unitl you get only the variable you want on one side. That is all there is to it.
30 = 8 - 2x
22 = -2x
-22 = 2x
x = -11
You should be able to do the others yourself
How would you go about solving this one, though: 3p - 8= 13 - 4p
Would you subtract the 13 from the 8 first and then add 4p to the 3p?
3p - 8= 13 - 4p
You would first add 8 to both sides of the equation.
3p = 21 - 4p
Then add 4p to both sides.
7p = 21
p = ?
Great! You're welcome. :-)
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