2006-09-28 13:12:45 · 16 answers · asked by julie_clark@sbcglobal.net 1 in Education & Reference ➔ Homework Help
OK, this is just like the last one. We need to have everything have an 8 on the bottom, so we use fractions. When you make everything have an 8 on the bottom, you get this equation:
-x/8 -72/8=24/8
Again, we take the top numbers to make a new equation, which reads:
-x-72=24
-x=24+72
-x=96
x= -96
We then put our number back into the original equation to check our math.
-96/-8 -9=3
12-9=3
3=3
2006-09-28 13:28:57 · answer #1 · answered by Bastet's kitten 6 · 0⤊ 0⤋
x/-8 - 9 = 3
x/-8 = 3 + 9
x = 12 x -8
x = -96
By substitution :
(-96/-8) - 9 = 3
12 - 9 = 3
3 = 3
2006-09-28 13:33:53 · answer #2 · answered by Germz 2 · 0⤊ 0⤋
okay the problem is
x/-8 - 9 = 3
+ 9 +9 You want to get the x by it's self so you do the opposite
x/-8 = 12 The nines cancell each other out on the left and the right equals 12
Now you want to do the opposite of division which is multiplication. If you do it on one side, you must do it on the other side.
(-8) * x/-8 = 12 * (-8)
The -8s cancell out on the left so all you have left is x and 12*(-8) equals -96.
x= -96
Now all you have left is to do the check and substitute the answer into the equation.
Hope that this helps. I teach this everyday!
2006-09-28 13:19:07 · answer #3 · answered by Shellze 2 · 0⤊ 0⤋
To solve for x, you should add 9 and then multiply by -8 on both sides.
x/-8 - 9 + 9 = 3 + 9
x/-8 = 12
(x/-8) * -8 = 12 * -8
x = -96
2006-09-28 13:16:28 · answer #4 · answered by Isaac 2 · 0⤊ 1⤋
if you're asking what x equals the answer is -96.
solution:
*add 9 to 3 to make the solution x/-8 = 12
*multiply both sides by -8 to cancel the -8 in the denominator
x = 12(-8)
*then just mulitply it out.
2006-09-28 13:18:24 · answer #5 · answered by Anonymous · 0⤊ 0⤋
4
2006-09-28 13:15:23 · answer #6 · answered by Anonymous · 1⤊ 2⤋
ok. Use the pronumeral "x" for something you don't understand. a million. you understand the cost after 20% is taken off. 20% = 0.2 as a result, use the equation: 40 8=x-0.2x 40 8=0.8x x=40 8/0.8 (use a calculator) x=60 2. signify the width with x. Perimeter = width + width + length + length. length = width - 4cm. sixty 4=x+x+x-4+x-4 sixty 4=4x-8 sixty 4+8=4x-8+8 seventy two=4x x=seventy two/4 x=18 width = 18cm, length = 14cm. 3.a. 0.9x = 23 (x is comparable to the load on earth) x=23/0.9 x=25.55555 b. 25.55555 * 13/5 = sixty six.444442
2016-10-18 04:04:58 · answer #7 · answered by Anonymous · 0⤊ 0⤋
x/-8 - 9 = 3
+9 +9
x/-8 = 12
*-8 *-8
x= -96
2006-09-28 13:15:31 · answer #8 · answered by Anonymous · 1⤊ 1⤋
x
_-9=3
8
-9
+9(they then cancel out)
Then you add 9 to 3 and you get a +12
Then you take -8 and multiply it by 12
the answer would be -96
2006-09-28 13:21:21 · answer #9 · answered by joshuaandashleigh 1 · 0⤊ 0⤋
x/-8 -9 =3
add 9: x/-8 = 12
multiply each side by -8: x= -96
2006-09-28 13:15:49 · answer #10 · answered by chococat 4 · 1⤊ 1⤋