SOLUTION: Hello I know how to solve this equation but when I insert 7/8 for x. I'm not getting 9. Can you provide the steps when x is 7/8? Thanks in advance. 2(4x+1)=9 8x+2=9 8x=7

Algebra ->  Linear-equations -> SOLUTION: Hello I know how to solve this equation but when I insert 7/8 for x. I'm not getting 9. Can you provide the steps when x is 7/8? Thanks in advance. 2(4x+1)=9 8x+2=9 8x=7       Log On


   



Question 1209916: Hello
I know how to solve this equation but when I insert 7/8 for x. I'm not getting 9.
Can you provide the steps when x is 7/8?
Thanks in advance.
2(4x+1)=9
8x+2=9
8x=7
x=7/8

Found 2 solutions by mccravyedwin, Edwin McCravy:
Answer by mccravyedwin(407) About Me  (Show Source):
You can put this solution on YOUR website!


Cancel the 4 into the 8 and get 2 on the bottom:

matrix%281%2C3%2C%0D%0A%0D%0A%0D%0A2%287%2F2%2B1%5E%22%22%5E%22%22%29%2C%22%22=%22%22%2C9%29

Distribute the 2 into the 7%2F2 and also into the 1

matrix%281%2C3%2C%0D%0A%0D%0A%0D%0A2%287%2F2%29%2B2%281%29%2C%22%22=%22%22%2C9%29

Cancel the 2's, get 7, and then, 2 times 1 is 2:

matrix%281%2C3%2C%0D%0A%0D%0A%0D%0A7+%2B+2%2C%22%22=%22%22%2C9%29

And finally

matrix%281%2C3%2C%0D%0A%0D%0A%0D%0A9%2C%22%22=%22%22%2C9%29


Edwin



Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
Here's a slightly different way:


Cancel the 4 into the 8 and get 2 on the bottom:

matrix%281%2C3%2C%0D%0A%0D%0A%0D%0A2%287%2F2%2B1%5E%22%22%5E%22%22%29%2C%22%22=%22%22%2C9%29

Write the 1 as 2%2F2

 

Then cancel the 2's,

matrix%281%2C3%2C%0D%0A%0D%0A%0D%0A9%2C%22%22=%22%22%2C9%29

Edwin