Question

question
solve the following inequality for n. write your answer in simplest form.
-3 - 2(-10n - 9) < 2n - 8 - 9
answer attempt 1 out of 2
n <
submit answer

Explanation:

Step1: 去括号

$-3 + 20n + 18 < 2n - 8 - 9$

Step2: 合并同类项

$20n + 15 < 2n - 17$

Step3: 移项

$20n - 2n < -17 - 15$

Step4: 计算

$18n < -32$

Step5: 求解n

$n < -\frac{16}{9}$

Answer:

$n < -\frac{16}{9}$