Maths

[weechero]

2x+7=?

[Tuvok]

You have forgotten to close the bracket! In a longer equation it would make a difference!

[grasscarp]

3(2x+5=27
so 6x plus 15 is 27
6x is 27 minus 15 which is 12 so x is 2.

[grasscarp]

I was answering as if he had closed the bracket.

[weechero]

3(2x+5)=27?

[elliemay1]

x=2

[grasscarp]

3(2x+5)=27?
multiply everything in the brackets by what is outside the bracket
6x plus 15 is 27
take 15 off both sides
6x is 12
x is 2

[bert_h]

3(2x+5) = 27, divide each side by 3
2x + 5 = 9, subtract 5 from each side
2x = 4, divide each side by 2
x = 2

Keep practising them!

[Prudie]

Are you helping someone with homework?

[Old_Geezer]

I think you meant "doing" rather than "helping" ?
Won't learn that way.

[Flyhalf]

You will have to learn to be more precise in setting out any problem.
The latest one should surely be 3(2x+5) = 27, that is you multiply everything within the brackets by 3 to arrive at the total.
If you divide BOTH sides by 3, you come to 2x + 5 = 9.
Again treating both sides the same, take away 5, so that 2x = 4
Next, divide each side by 2, and you are left with x = 2.

Test your result thus: 3 times
2x2, i.e. 4 + 5 , which is 9
= 27.

[yogi-bear]

Dont you think we should be paid for doing someone's homework?....lol

He or She will score brilliantly in the class, but suck at the exams.

[grasscarp]

yogi that is why I am trying to explain how to do it rather than just give an answer. I help 3 boys with their maths homework and after they grow sick of my explaining magically they start doing it for themselves.

[Tuvok]

At college our lecturer would set a problem. But when there was a mistake with the problem he woul change the problem to match the answer he gave!

[elliemay1]

At college when our lecturer got stuck he used to look at the answer and work backwards!

[yogi-bear]

Thats great, grasscarp......I call it guidance at times of need. lol

I think that weechero could have asked their parents/guardians to help them out, or perhaps if they didnt understand how to do the equations at school, stay behind after class and mention it to their teacher that they didnt quite grasp it and whether they can take a little time to explain it again, so they do understand.
You'll be surprised to learn that the teacher, on most occasions, will love to help out and know that the student wants to learn to answer it correctly.

My next door neighbour is a maths teacher, semi-retired now, but called upon 4 times a week at two local high schools, and has helped and taught our children along their growing up years.