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geometry homework
so, i have this geometry homework thingy... and you have to write what property you use for each step... the question is 5(x - 1) = 4x + 13.... and so the properties i used are distrobution, subtraction and addition.. but i don't know if it's right or not... i got the answer 18... so if any one could i help i would really appriciate it... thanx
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Hey-
I know you have had this answered- and you asked it yesterday.. but I really want to help you!
I was in Geometry last year and I remember doing these problems...
5(x - 1) = 4x + 13
then distribute...(distributive property)
5x - 5 = 4x + 13
then add 5 from both sides (addition prop. of equality)
5x = 4x + 18
then subtract 4x from each side (subtraction prop. of equality)
1x = 18
so then..
x = 18
I hope I helped!
And if you ever need geometry homework help- feel free to post questions in my inbox!
--Jack
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Well if you distribute, you should have: 5x-5 = 4x + 13.
You want to get all the variables on one side of the equal side & a number on the other side. In order to do that, you'll subtract 4x (from the right side of the equal sign)..which means you'll also need to subtract the 4x from 5x (on the the left side of the equal sign). That would leave you with the equation: x-5=13. Now what minus 5 equals 13? The answer would be 18. Therfore, x=18. To check your work, just plug in the 18 in place of "x" in your original equation. & both should equal eachother.
5(18)-5=85
4(18)+13=85
So your answer is right because
5(18)-5 = 4(18)+13
Math is hard to explain with just words, but I hope that helped!
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Hey, just a tip for figuring out if your answer is right:
when it's an equation where you're solving for variables, plug the answers you get for each variable back into the equation. So like in this case it would look like:
5(18-1) = 4(18) + 13
And then if the two sides equal the same thing, you've got the right answer! :D Just a tip for later.
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Well.............................
guess what???
YOUR RIGHT!!!!
:D :D :D
you don't need advice for this smartie :D
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