How to solve for the variable "X"
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How to solve for the variable "X"
The following problems have tripped me up. I can't seem to figure out how to solve them. I've tried, several times, and had my algebra teacher explain them, but I still can't get the answers.
3x - 11 = 6
2x - 7 = 3 + x
3 + 3x = 9 + 2x
3x - 3 = 6 + x
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Solution Summary
This solution assists to solve for the variable "X" for the problems in a step-by-step process.
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Basic Tips for Solving Equations
Suppose I start with something like
x = 5
That's no fun, is it? There's nothing to figure out. But I can multiply both sides of the equation by 3 without changing the truth of the equation, right?
3x = 15
And there are a lot of different ways I can write 3:
3 = 1 + 2
= 7 - 4
= -5 + 8
So I can change my equation to look like this:
3x = 15
x(3) = 15
x(7 - 4) = 15
7x - 4x = 15
And since I can add or subtract anything on both sides of an equation without changing the truth of the equation, I can add 4x to both sides:
7x - 4x = 15
7x - 4x ...
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