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Ymorist [56]
3 years ago
5

Given 2x + ax - 7 > -12, determine the largest integer value of a when x = -1.

Mathematics
2 answers:
Phoenix [80]3 years ago
6 0
       2x + ax - 7 > -12
2(-1) + a(-1) - 7 > -12
          -2 - a - 7 > -12
          -2 - 7 - a > -12
               -9 - a > -12
             <u> + 9          + 9</u>
                     <u>-a</u> > <u>-3</u>
                     -1    -1
                       a > 3
vlabodo [156]3 years ago
6 0
In the equation plug in x that is -1
2(-1) + a(-1) -7 > -12
-2 -a -7 > -12
+2           +2
-a -7 > -10
    +7    +7
-a > -3
divide by -1
a < 3
remember when ever you multiply or divide by a negative number flip the sign
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