3x>-10-5. 3x>-15. x>-15/3. x>-5.
It is 420,5040,840 and 1680 is divisible by 2,3,4,5 &6.
You may find it easiest if you convert all the fractions to decimal form:
5.433...
5.166...
5.756
Now reorder these from smallest to largest.
Note: I had to guess that by "68,90," you actually meant "68/90."
X + y = 1.....multiply by -2
2x - 3y = -30
-----------------
-2x - 2y = -2 (result of multiplying by -2)
2x - 3y = -30
----------------add
-5y = -32
y = -32/-5
y = 32/5 or 6.4 <===
The factored expression would look like this : 3(x+8)(x-8)
