Step-by-step explanation:
Let's solve the inequalities separately.
7x - 9 < 12
Add 9 on both sides:
7x < 21
Divide 7 on both sides:
x < 3
x + 8 > 11
Subtract 8 on both sides:
x > 3
This doesn't make sense, did you mean to add something next to the 1 in front of x?
Hypothetically, let's say it's 7x - 9 < 12 or 1/3x + 8 > 11
We would have x < 3 because the first inequality is the same.
1/3x + 8 > 11
We would subtract 8 on both sides:
1/3x > 3
Multiply 3 on both sides:
x > 9
Then the answer would be 3 < x < 9
