anonymous
  • anonymous
Solve for x: |4x+12|=16
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Someone please help me!
anonymous
  • anonymous
alright so we would first subtract 12 from 16 leaving four
anonymous
  • anonymous
Answer choices A. X=7, x=-7 B. X=1, x=-1 C. X=1, x=-7 D. X=-1, x=7

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anonymous
  • anonymous
how many times would 4 go into 4? once. There for, the answer would be 1
anonymous
  • anonymous
aishe
anonymous
  • anonymous
Alright I understand
anonymous
  • anonymous
So it's either b or c correct
anonymous
  • anonymous
LynFran
  • LynFran
|4x+12|=16 we need to get rid of the absolute value sign to do the we split the equation into 2 by (4x+12)=-16 and (4x+12)=16 we now solve each equations arriving at 2 solution
LynFran
  • LynFran
for x
texaschic101
  • texaschic101
correct ^^....nice explaining Lyn
anonymous
  • anonymous
Ok so my answer is c?
LynFran
  • LynFran
so 4x+12=-16 we take 12 frm both sides we get 4x+12-12=-16-12 4x=-28 divide both sides by 4 we get x=-28/4 x=-7 now solve the other equation to get the other solution for x 4x+12=16 ??
anonymous
  • anonymous
1?
LynFran
  • LynFran
yes
anonymous
  • anonymous
Ok thanks in a few mins can I ask u another question.
LynFran
  • LynFran
sure
anonymous
  • anonymous
Thanks
anonymous
  • anonymous
Solve: -1/2x+1=-X+8
anonymous
  • anonymous
anonymous
  • anonymous
Answer choices A. 7 B. 1/2 C. 14 D. 18
anonymous
  • anonymous
anonymous
  • anonymous
@LynFran please help your an amazing helper
Vocaloid
  • Vocaloid
-1/2 x + 1 = -x + 8 first add +x to each side of the equal sign
anonymous
  • anonymous
Ok
Vocaloid
  • Vocaloid
what do you get after adding x to each side?
LynFran
  • LynFran
yea like what vocaloid said ^^
LynFran
  • LynFran
-1/2(x)+x+1=-x+x+8 1/2(x)+1=8 now subtract 1 frm both sides
LynFran
  • LynFran
what do we get
anonymous
  • anonymous
1/2x=7
LynFran
  • LynFran
good now multiple both sides by 2
LynFran
  • LynFran
we get??
anonymous
  • anonymous
X= 14
LynFran
  • LynFran
correct
anonymous
  • anonymous
Thank u so much!!!
LynFran
  • LynFran
ok

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