Answer:
[tex] - 2 a + 7 b [/tex]
Step-by-step explanation:
We are given the following expression and we are to simplify it:
[tex] 5 a + 3 b - 7 a + 4 b [/tex]
Re-arranging this expression by writing the like terms together to get:
[tex] 5 a - 7 a + 3 b + 4 b [/tex]
Now simplifying it by adding and subtracting the terms to get:
[tex] - 2 a + 7 b [/tex]
