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11) -5b-83-68 or 1lb - 12

Sagot :

Case 1 : 4 b + 18 < = - 12 b - 14

4 b + 12 b < = -14 - 18

16 b < = -32

Divide both sides by 16, we have:

b < = -2 ( -3 , -4 , -5 ,................ )

Case 2 : -12 b - 14 < = 14 - 5 b

-12 b + 5 b <= 14 + 14

- 7 b < = 28

Divide both sides by 7, we have:

b >= -4 ( -3 , -2 , -1 , 0 , ........ )

From the combined solutions, we have seen that b = -3