9h + 2 < - 79 subtract 2 to both sides
9h < - 81 divide by 9 to both sides
h < -9
All numbers less than 9 are solutions for the inequality. Note that 9 is not a solution.
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9h^2+24h+16=(9h+16)(h+1)
9h + 2 = -79 9h = -81 h = -81/9 h = -9
h-9h-6+12h+40 = 22 h-9h+12h = 22+6-40 4h = -12 h = -3
5h - 3h + 9h = 176 11h = 176 h = 16
It is: 9h+4(2+h) = 9h+8+4h => 13h+8