Step-by-step explanation:
click on the image for the full answer
Answer:
What do you mean?
Step-by-step explanation:
i guess a skill I want to improve is algebra..?
Answer:
15 students
Step-by-step explanation:
The fraction of students who will repeat the exam is:

=
simplified is:

Extract this fraction of 45:

Hope this helps
Answer:
Step-by-step explanation:
8x - 2y = 6
-8x + 4y = 12
2y = 18
y = 9
8x - 18 = 6
8x = 24
x = 3
(9, 3)