Algebra - Ch. 1: Linear Equation (18 of 21) Special case #3

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In this video I will solve example problems of Special Case #3 using cross-multiplication where 2 fractions are equal when x=set of all real numbers.

Next video in this series can be seen at:
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I am bored and I came across your videos... Very interesting to relearn things...

I am just curious... Is making fractions into whole numbers should always come first before combining like terms???...

If you transpose 4X into the numerator that would give 4x/ 2x on the left side... 3 would be the denominator on the right side...

SO:...
: 4x / 2x = 6 / 3...
: 2x = 2 ...
: x = 1...

If we see that from the original equation...
: 3 / ((2) * (1)) = 6 / ((4) * (1))...
: 3 / 2 = 6 / 4 ...

That would also be true...

But still... I have also watched the previous video too... The answer, though quite close when the same solution, is not the same... Unless you round-off to the nearest ones...

Is it another mathematical mystery or error???...

vladimirkafm
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What about complex numbers, sir? Couldn't I also just plug in any element from the set of complex numbers for x?

toledomerendo