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OpenStudy (tkhunny):
Have you considered adding 4 and dividing by 2?
OpenStudy (stephaun):
Adding 4 to 20?
OpenStudy (zale101):
yes
OpenStudy (stephaun):
add 4 to 20 then divide 24 by 2
OpenStudy (zale101):
\[|2x+6|=24\]
undue the absolute value term. To undue it you should follow this rule \[|x|=\pm x \]
That means with your equation, you should use the plus or minus to the right side of the equation so u can undue the absolute value from the left side of the equation
\[2x+6=\pm 24 \]
Since 24 is plus or minus, then the equation will have two solutions when solving for x.
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OpenStudy (zale101):
solve for x
2x+6=24
then solve for x when 24 is negative
2x+6=-(24)
OpenStudy (stephaun):
I got 2x=30 and 2x=-18
OpenStudy (zale101):
2x+6=24
subtract -6 to both sides u get
2x=18
OpenStudy (stephaun):
?
OpenStudy (zale101):
2x=30 is wrong too
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OpenStudy (zale101):
2x+6=-(24)
u subtract -6 to both sides
2x=-(24)-6
what's -24-6?
OpenStudy (stephaun):
-30
OpenStudy (zale101):
yes
OpenStudy (zale101):
for 2x+6=24
when u subtract -6 to both sides what will u get
2x+6(-6)=24-6
6-6 is zero so it cancels out
2x=24-6
OpenStudy (zale101):
24-6?
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OpenStudy (stephaun):
So i would be 2x=-30 and 2x=18?
OpenStudy (zale101):
yep
OpenStudy (stephaun):
So it would be x=-15 and x=-9
OpenStudy (zale101):
now to isolate x for the multiplication of 2, divide 2 to both side
2x=-30
2/2x=-30/2
and 2x=18
2/2x=18/2
OpenStudy (zale101):
so 18/2=-9??
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