Please solve: -5x (less than or equal to) -15?
回答 (14)
-5x ⤠-15
x ⥠-15/-5
x ⥠3
- 5x ⤠- 15
15 ⤠5x
x ⥠3
it seems this
-5X <= -15
will divide both sides by (-5) to get only the X in one side
X <= 3
Easy, now X may be 3 or more than 3
- 5x less than or equal to -15
Divide both sides by -5 we will have
x is less than or equal to 3
-5x<=-15
x>=(-15/-5)
x>=3
when we delete or mutiply, we need to flip the sign
x is greater then or equal too 3... -5 divids into 15, 3 times.. you have to switch the less than to greater than because you divided by a negative.. trust me
divide -5x and -15 both by -5x and you should get (x=3)
You first need to know the value of x.
If it is 5 then that will be a totally different answer than 1.
-5x > -15
divide by -5 to both sides
because your dividing by a negative number u flip the signs
so x < 3
x is greater than or equal to 3
收錄日期: 2021-05-01 12:10:07
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