anonymous
  • anonymous
I have no idea where to start on this problem..... Any help, please :) -10 - 3/7 x = 5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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dumbcow
  • dumbcow
i am you need to solve for x
anonymous
  • anonymous
multiply each side of the equation with 7x
anonymous
  • anonymous
do you need to go back to school for english, dumbcow?

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anonymous
  • anonymous
so how do I start that? do I add 3/7 to the right side?
anonymous
  • anonymous
nurse, is x in the denominator of the fraction?
anonymous
  • anonymous
why multiply 7?
dumbcow
  • dumbcow
yes thats why i do math
anonymous
  • anonymous
get ride of the fractions and multiply by 7 in each side
anonymous
  • anonymous
You get -10-3=5(7x)
anonymous
  • anonymous
no X is not the denominator
anonymous
  • anonymous
The fraction is 3/7
anonymous
  • anonymous
Frederick, what do I do next?
dumbcow
  • dumbcow
-10 -(3/7)*x = 10 Add 10 to both sides _>-(3/7)*x = 20 multiply by reciprocal of -3/7 on both sides ->x = 20*(-7/3) -> x = -140/3
anonymous
  • anonymous
you would not get -10-3=5(7x), you would get -10(7x)-3=5(7x), which does not help. Isolate x, => -(3/7)x=5-10 => x = (5-10)/(-3/7)
anonymous
  • anonymous
nurse just google it since dumbcow doesn't know what he's doing
anonymous
  • anonymous
sorry i made a mistake. the equation is -10-(3/7)x = 5, add 10 to both sides, then divide by -(3/7)
dumbcow
  • dumbcow
haha oops yeah i wrote the problem down wrong x=-105/3
anonymous
  • anonymous
x=35
gw2011
  • gw2011
Add +10 to both sides of the equation because you want to keep the unknowns (x in this case) on one side of the equation and the knowns on the otherside of the equation. This will give you the following: -3/7x=5+10=15 Now multiply both side of the equation by -7 (since there is a minus sign and you want to put the knowns on the same side of the equation) and divde by (for the same reason of putting the knowns on the same side of the equatioin). This gives you the following: x=[(15) (-7)]/3 x=-35
gw2011
  • gw2011
I inadvertently left out the number 3 when I said to "and divide by (for the same reason...)." Obviously, the number 3 should have been placed after "divide by." However, you can see this in the equation where the number 3 is dividing the equation.

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