-1/9x = -4?

2008-07-31 6:30 am
solve the equation

回答 (12)

2008-07-31 6:36 am
✔ 最佳答案
To solve for X, multiply both sides of the equasion by -9 and you get:

X = 36
2008-07-31 6:33 am
X= 36
2008-07-31 6:51 am
x both sides by 9 to get rid of the fraction.
-1/9x = -4
x9........x9
the 9's cancel.
-1x=-36
-x=36
minuses cancel.
x=36
2008-07-31 6:42 am
Divide -1/9 to each side
2008-07-31 6:39 am
x=0.0278 this is right (1/36) only 2 of us have got it right. If x was equal to 36 the equation would be saying -0.0008=-4 only miiimiii and I are correct, all you others better brush up on your maths
2008-07-31 6:37 am
First multiply both sides of the equation by (-1) so as to get rid of the minus signs.

(1/9) * x = 4 where * is the multiplication symbol.

Now multiply both sides of the equation by 9 so as to isolate x.

9 * (1/9) * x = 4 * 9

x = 36 <<<<<
2008-07-31 6:33 am
-1/9x = -4
1 = 36x
1/36 = x

voila!

My answer is CORRECT. Please plug it into the CALCULATOR to CHECK. Thank you.

And there is a difference. If the equation is (-1/9) x, then 36 will be the answer.
參考: Algebra 1 skiiiills.
2008-07-31 9:02 am
Assuming that question SHOULD read as :-
(-1/9) x = - 4
(1/9) x = 4
x = 36
2008-07-31 6:53 am
-1/9X = -4

multiply each side by -1/9 to isolate the X

-1/9X = -4
-1/9 -1/9

X = -4/-1/9
rewrite each number as a fraction to get:
X = -4/1 / -1/9

Now, multiply the denominator in the top fraction (1) by the numerator in the bottom fraction (1) to get the new denominator

Multiply the numerator in the top number (4) by the denominator in the bottom number (9) to get the new numerator

X = 36, is the answer


Now verify your answer


-1/9 (36) = -4

-1/9 (36/1) = -4
nine goes into nine once and nine goes into 36 four-times, hence:

-1/1(4) = -4

-4 = -4
2008-07-31 6:35 am
-1/9X=-4
CANCEL(DIVIDE) THE NEGATIVE SIGNS FIRST.
-> 1/9X=4
AND THEN..........
MULTIPLY EACH SIDE BY 9 TO CANCEL OUT 1/9
->9(1/9)X=4(9)
CANCEL..............

X= 36 VOILA! ;]]


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