anonymous
  • anonymous
7+5a=8a+7
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
you can do algebra, or you can think your choice
anonymous
  • anonymous
or if you like we can solve it both ways
anonymous
  • anonymous
well i tried it this way 5a-8a=7-7 = 3=0 but thats not it

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
that is a good method, but you made one mistake
anonymous
  • anonymous
\[5a-8a=7-7\] is a good first step, and it is also true that \(7-7=0\)
anonymous
  • anonymous
but \(5a-8a\neq 3\)
anonymous
  • anonymous
if you have 5 thousand dollars and spend 8 thousand dollars you do not end up owing only 3 dollars
anonymous
  • anonymous
right
anonymous
  • anonymous
while it is true that \(5-8=-3\) you have an \(a\) which seems to have disappeared \[5a-8a=-3a\] is better
anonymous
  • anonymous
so you should be looking at \[-3a=0\]
anonymous
  • anonymous
ohhhh then 3a-8a =5-5=0
anonymous
  • anonymous
lets go slow
anonymous
  • anonymous
there is no 5 in it it should be \[5a-8a=7-7\\ -3a=0\]
anonymous
  • anonymous
yea
anonymous
  • anonymous
and if \(-3a=0\) then of course \(a=0\)
anonymous
  • anonymous
well then what do you do with the 3
anonymous
  • anonymous
@satellite73
anonymous
  • anonymous
ok lets think i have a number , i am not telling you what it is but if you multiply it by -3 you get zero what is my number?
anonymous
  • anonymous
0
anonymous
  • anonymous
done
anonymous
  • anonymous
thanks. :)
anonymous
  • anonymous
in other words, if \(-3a=0\) then \(a=0\) yw

Looking for something else?

Not the answer you are looking for? Search for more explanations.