Hello from MrBillDoesMath!
Answer:
7x + 3 < 26
x < 23/7
Discussion:
The question can be written as:
7x + 3 < 26 =>
7x +3 - 3 < 26 - 3 => (subtract 3 from both sides)
7x < 23 =>
x < 23/7 (divide both sides by 7)
Regards,
MrB
P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!