This is a simple equation:
x - 7 < 14
x < 14 + 7
x < 21
→ Many people think that because there is not "=" sign they don't flip the sign of what in this case is -7. But actually, the symbols "<" and ">" act as the equal sign. This rule doesn't apply to positive number, only negative.
Hope it helped,
BioTeacher101
(If you have any questions, feel free to ask them in the comments)
Yes if they relate to one another using an = sign
Answer:
x<-4
Step-by-step explanation:

Answer:x<1/7 (5 - sqrt(130))
Step-by-step explanation:
It is said the blue card is a rectangle, so you don’t have to minus the inside rectangle. :)