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February 23rd, 2014, 09:13 PM   #1
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5+16/3x=5/9 Pulling my hair out over this. Help, please.

College prealgebra. You subtract 5 from both sides. That will leave you with 16/3x=5/9-5/9. Right? Because you need a denominator that's the same in order to subtract. So you're left with 16/3x=9. Now you need the x alone. So the opposite of multiplication is division. And then I get lost here. I'm sure I did something wrong earlier. I'm only on question 17 of 66 and I've been through four pieces of papers trying to figure this problem out.
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February 23rd, 2014, 10:19 PM   #2
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Re: 5+16/3x=5/9 Pulling my hair out over this. Help, please.

5+16/3x=5/9 Pulling my hair out over this. Help, please.

Relax

16/3x = (16/3)x = 16x / 3 : that's same thing, but clearer

5 + 16x / 3 = 5/9

Multiply through by 9:
45 + 48x = 5 ; still with me?

Subtract 45 from each side:
48x = -40

Divide each side by 48:
x = -40/48

Simplify: x = -5/6

Don't give up...like anything else, practice required...
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