|
Question 5793: Okay - today I am stuck with linear equations.... I have solved the equation, but something is not right becasue when I go to substitute into the equation, it does not equal.... Please help!! Thanks!
Here's the first:
-5z-3-4(z+1)=2z+6
I solved it and came up with -13/11. This however does not check.
and number two:
-3[-6p+4-5(p-1)=-2p-5
I solved this and came up with -8/35. Again, this will not check.
Finally number three:
2p=5(2p+5)
I solved this and came up with -8/25. And you guessed it, this did not check.
HELP!!! I believe I solved them correctly, but why are they not checking???
Answer by arunpaul(104)   (Show Source):
You can put this solution on YOUR website! -5z-3-4(z+1)=2z+6
or -5z-4z-2z=6+4+3
or -11z=13
or z = -13/11 (Ans)
-3[-6p+4-5(p-1)]=-2p-5
or 18p-12+15p-15 = -2p-5
or 18p+15p+2p=-5+15+12=22
or 35p=22
or p = 22/35 (Ans) u have to correct the question as i did
2p=5(2p+5)
or 2p = 10p+25
or -8p =25
or p = -25/8 (Ans)
|
|
|
| |
