If 3a + 2b = 7 and 2a + 2b = 9 , what is the value of 5a+4b?
1 Answer
Oct 17, 2015
5a + 4b = 16
Explanation:
If 3a + 2b = 7 and 2a + 2b = 9, what is the value of 5a + 4b?
Use combination and add the equations of the system.
3a + 2b = 7
2a + 2b = 9
5a + 4b = 16
