Inequality 12021

Solve on Z - inequality with absolute value:

| x-18 | +4> 1

Correct answer:

x = Z

Step-by-step explanation:

x18+4>1  x18 x18 = x18 x18+4>1 x18+4>1 x>15  x<18 x18 = 18x 18x+4>1 x>21 x<21  x=Z

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