Answer:
For each of them, you would need to isolate the variable.
Step-by-step explanation:
Okay so for the first one, you would need to isolate the x.
x/-2 = 3
Since the "/" represents division, you need to do the inverse of dividing which is multiplication. You would need to multiply on both sides of the equation.
x = 3 x -2
x = -6
And there you have it, the answer for the first problem!
You again, isolate the x for the second equation as well.
-9x = -9
Since the x is directly next to the 9, indicating that it is multiplication. Do the inverse of multiplication which is division. Divide by -9 on both sides.
x=-9
Since -9/-9 cancels each other out, that leaves x by itself.
x = -9/-9
x = 1
You only end up cancelling out the number next to the variable, not the one on the other side. (if you are wondering why I didn't cross it out)
As for the third one, you can carry the -5 over to the -4, but since the inverse of -5 is +5, you add 5 to -4.
x = 1
As easy as that! You don't do the same as the two questions before because the number isn't right next to the variable.
For the fourth one, you isolate the x once more. You do the inverse of multiplication which is again, division. And again, the -5/-5 cancel out!
x = -5/25
x = -0.2
And finally, the last one!
You repeat the same steps as the third one. Add 2 on each side and cancel out 2 + 2 on the x's side.
x = 10 +2
x = 12
And that's all your answers. Hope you understood :)
, where s is the side length. Then, just do 9 to the third power, or 9*9*9, which equals 729.