Inverse problem
Algebra
Level
pending
Undo and solve this equation for x: 12x+11=47
The answer is 3.
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This is likely quite easy, it's mainly for the younger bunch out there :)
To solve this, we must remember the steps to solving inverse operations, (meaning we must make the variable all by itself on 1 side) - if you have problems with that, see here . Remember, when we change one side of an equation, we must do the same on the other side.
We'll start by undoing the +11, by subtracting 11 from both sides:
12x+11=47
That gives us 12x=36, so now we'll divide both sides by 12:
12x/12=36/12
and that leaves us with: x=3 which is the answer to our problem.