номер 157.
а)
8х-7>9
8x>7+9
8x>16
x>2
12x-9≤0
12x≤9
x≤9/12
x≤3/4
2x-1>5-x
2x+x>1+5
3x>6
3-x≥7+3x
-x-3x≥7-3
-4x≥4
-x≥1
x≤-1
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номер 157.
а)
8х-7>9
8x>7+9
8x>16
x>2
12x-9≤0
12x≤9
x≤9/12
x≤3/4
2x-1>5-x
2x+x>1+5
3x>6
x>2
3-x≥7+3x
-x-3x≥7-3
-4x≥4
-x≥1
x≤-1