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Drupady [299]
3 years ago
6

I'm confused on this problem 2/3x-1=5

Mathematics
2 answers:
svlad2 [7]3 years ago
5 0

Answer:

x=9

Step-by-step explanation:

You add one to both sides, multiply 3 to both sides (to further isolate x), and then divide by 2 on both sides. When you substitute back in, both sides of the equation are equal to each other.

sergey [27]3 years ago
3 0

Answer:

x=9

Step-by-step explanation:

2/3x-1=5

Add 1 to each side

2/3x-1+1= 5+1

2/3x = 6

Multiply each side by 3/2

2/3x*3/2 = 6*3/2

x = 9

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I'm assuming all of (x^2+9) is in the denominator. If that assumption is correct, then,

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Another possible answer is f(x) = \frac{4}{x+9}, \ \ g(x) = x^2

There are many ways to do this. The idea is that when we have f( g(x) ), we basically replace every x in f(x) with g(x)

So in the first example above, we would have

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In that third step, g(x) was replaced with x^2+9 since g(x) = x^2+9.

Similar steps will happen with the second example as well (when g(x) = x^2)

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