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Jet001 [13]
3 years ago
9

5b-b-1 > or equal too-11

Mathematics
2 answers:
Murljashka [212]3 years ago
5 0

Answer:

 b ≥ -\frac{5}{2}

Step-by-step explanation:

The expression:

      5b  - b  - 1 ≥ -11

Now to solve this problem, we must be aware of some rules of inequality.

When dividing or multiplying with a negative value, the sign of the inequality must change;

         5b  - b  - 1 ≥ -11

             4b  - 1 ≥ -11

  Add + 1 to both sides;

            4b -1 + 1 ≥ -11 + 1

            4b ≥ -10

Now divided both sides by 4;

            \frac{4b}{4} ≥ \frac{-10}{4}  

           b ≥ -\frac{5}{2}

vova2212 [387]3 years ago
4 0

Answer:

-2.5

Step-by-step explanation:

5b - b - 1 ≥ -11

4b - 1 ≥ -11

     +1    +1

4b ≥ -10

4/4     -10/4

b ≥ -2.5

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