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OpenStudy (anonymous):
Since u need to cancel out -18 to get a alone the opposite of multiplication is division so divide -18 out on each side of the equal sign
OpenStudy (anonymous):
All you need to do is divide -108 by -18, since the opposite of multiplication is division =)
OpenStudy (anonymous):
a=6
OpenStudy (anonymous):
Yes it does. Good job!
OpenStudy (anonymous):
thanks... 8-2=x+5
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OpenStudy (anonymous):
Opposite of addition is subtraction
OpenStudy (anonymous):
am I subtracting by 5
OpenStudy (anonymous):
Yes
OpenStudy (anonymous):
So the equation becomes 8-2-5 = x
OpenStudy (anonymous):
11x
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OpenStudy (anonymous):
Not quite
OpenStudy (anonymous):
8-2 = 6
6-5 = ?
OpenStudy (anonymous):
1
OpenStudy (anonymous):
x=1
OpenStudy (anonymous):
Yes!
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OpenStudy (anonymous):
how do I check answer
OpenStudy (anonymous):
You substitute x for the answer you got
OpenStudy (anonymous):
For example 8-2 = x+ 5 and you got x = 1
To check you answer you
Plug in x
8-2 = 1 + 5
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
No problem
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OpenStudy (anonymous):
1/5x=-4/5
OpenStudy (anonymous):
need help with 1/5x=4/5
OpenStudy (anonymous):
Is the 1/5 next to the x or is it 1 over 5x
OpenStudy (anonymous):
next to the x
OpenStudy (anonymous):
In this case to cancel out the fraction u multiply by the reciprocal. Which is a fancy word for flipping the fraction. So 1/5 becomes 5/1 which is also 5
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OpenStudy (anonymous):
So the equation becomes x = 4/5(5/1)
OpenStudy (anonymous):
do I have to multiply
OpenStudy (anonymous):
Yes
OpenStudy (anonymous):
20/5
OpenStudy (anonymous):
x=20/5
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