leblanc68 leblanc68

02-08-2017
Mathematics

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What value of x is in the solution set of 9(2x + 1) < 9x – 18?

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Аноним Аноним

02-08-2017

18x + 9 < 9x - 18
9x < -27
x < 3

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coreyjand coreyjand

02-08-2017

Simplify the left side:

18x + 9 < 9x -18

Subtract the 9x from both sides:

18x +19 < 9x - 18
-9x -9x

9x + 19 < -18

Subtract 19 from both sides:

9x + 19 < -18
-19 -19

9x < -27

Divide each side by 9:

x = -3

Answer Link

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