#1: -4x + 7y = 1
+ 4x + 4x
----------------------------
7y = 4x + 1
----- ----- -----
7 7 7
Final Answer: y = 4/7x + 1/7
#2: 25 = 2x + 5y
When the numbers are in this order, I like to switch them around.
2x + 5y = 25
- 2x - 2x
---------------------------
5y = -2x + 25
------ ------ -----
5 5 5
Final Answer: y = -2/5x + 5
I hope this helps you!
