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OpenStudy (anonymous):
Solve.
–4 ≤ 11 – 3x
A.
x ≥ –5
B.
x ≤ –5
C.
x ≥ 5
D.
x ≤ 5
@cp9454
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OpenStudy (goldphenoix):
\[\large \large –4 ≤ 11 – 3x\] We want to isolate -3x, therefore we have to get rid of 11.
How can we get rid of 11?
OpenStudy (anonymous):
Multiply both sides?
OpenStudy (anonymous):
1st subtract -11 on oth sides of inequality,..
OpenStudy (goldphenoix):
Mmm. Not quite. We want to subtract 11 to both side. Since 11 is a positive, subtracting it by 11 will make it 0 or 'get rid of it'
So -4 - 11 = ?
OpenStudy (cp9454):
D
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OpenStudy (goldphenoix):
It can't be D.
OpenStudy (anonymous):
oh..yes...11 not -11
OpenStudy (anonymous):
and then divide it by -3...
dividing by -3 will also changes the sign of inequalit..
OpenStudy (cp9454):
sorry, C cause when you multiply both side by -1 sign of inequality changes
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