Algebra Examples

Find the Intersection
f(x)=9x , f(x)=x
Step 1
Substitute x for f(x).
x=9x
Step 2
Solve for x.
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Step 2.1
Move all terms containing x to the left side of the equation.
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Step 2.1.1
Subtract 9x from both sides of the equation.
x-9x=0
Step 2.1.2
Subtract 9x from x.
-8x=0
-8x=0
Step 2.2
Divide each term in -8x=0 by -8 and simplify.
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Step 2.2.1
Divide each term in -8x=0 by -8.
-8x-8=0-8
Step 2.2.2
Simplify the left side.
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Step 2.2.2.1
Cancel the common factor of -8.
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Step 2.2.2.1.1
Cancel the common factor.
-8x-8=0-8
Step 2.2.2.1.2
Divide x by 1.
x=0-8
x=0-8
x=0-8
Step 2.2.3
Simplify the right side.
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Step 2.2.3.1
Divide 0 by -8.
x=0
x=0
x=0
x=0
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