5-4f=f+25 i got f=3.33
8(3y+5)=3(8-2y)+5 i got 0.367
3x/5+3=2/5 i got -4.33
3/x-7=6 i got 0.231
i just don't know if i've done them right, so if they're wrong could you tell me and i'll re-do them 4 about the 30th time:(
2006-10-09 10:50:10 · 3 answers · asked by Jay C 1 in Education & Reference ➔ Homework Help
1. wrong (see sweetholyeiei or Melanie for correct answer)
2. right
3. right
4. right
2006-10-09 10:55:56 · answer #1 · answered by sunshine 4 · 0⤊ 0⤋
Gimme a sec and I can show you how to do them.
#1
5-4f = f+25 add 4f to both sides
5=5f+25 subtract 25 from both sides
-20 = 5f divide both sides by 5
-4 = f
#2 (correct)
#3 (correct)
#4 (correct) - I'm assuming that the equation is (3/x)-7=6, and not 3/(x-7)=6
2006-10-09 17:53:22 · answer #2 · answered by Rainy Days and Mondays 3 · 0⤊ 0⤋
5-4f = f+25 this is ur equation
-4f = f + 25 - 5 subtract 5 on both side
-4f = f + 20 then u get 20
-4f-f =20 subtract f on both side
-5f = 20 then u get -5 f. divide -5 on both sides.
f = -4 that's the right answer
DON'T FORGET TO SUBSITUTE IT BACK!! THEN U'LL KNOW IF YOUR ANSWER IS RIGHT OR WRONG!!
2006-10-09 17:58:10 · answer #3 · answered by sweetholyeiei 1 · 0⤊ 0⤋