SOLUTION: I am a parent trying to help my daughter with this equation. I am not sure what I am doing incorrectly.
-4=7x-(-1)/8
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Question 64039: I am a parent trying to help my daughter with this equation. I am not sure what I am doing incorrectly.
-4=7x-(-1)/8
Found 2 solutions by sarahschober, praseenakos@yahoo.com:
Answer by sarahschober(35) (Show Source): You can put this solution on YOUR website!
multiply both sides by
add -1 to both sides
divide both sides by 7
Answer by praseenakos@yahoo.com(507) (Show Source): You can put this solution on YOUR website!
QUESTION:
-4=7x-(-1)/8
ANSWER:
-4 = 7X - (-1)/8
Add (-1)/8 on both sides of the equation.( Because here we want to find the value of x. For that bring all the x terms in one side and all the other terms into other.)
Here in the right side we have (-1)/8 is subtracting from 7x, so add both sides by that term so that it will get cacelled from the right side and only 7x will retain.
==> -4 +(-1)/8 =7x-(-1)/8 + (-1)/8
==> -4 +(-1)/8 = 7x --------------------------(1)
Now we have to simplify the left hand side.
Here we can rewrite the expressions as follows,
-4/1 +(-1)/8
Here the denominators are not same so first of all make it equal.
Find out the least common factor of 1 and 8, which is 8
Multiply whole term by 8 and put tha common denominator 8
==> {8* -4/1 +(-1)/8 }/8
==> { -32 - 1} /8
==> -33/8
==> -33/8
Now equation (1)-4 +(-1)/8 = 7x ==>
-33/8 = 7X
NOW DIVIDE BOTH SIDES BY 7
==> -33/8*7 = 7x/7
==> -33/56 = x
==> x = -33/56
Hope you understood.
Regards.
Praseenakos@yahoo.co.in
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