Question

Find the sum and express it in simplest form:
(-y+5a-4) + (-3a-a-5)

Answer 1

combine like terms @Haaileyyy

Answer 2

i think it's 4y+4a+9 but I'm not sure

Answer 3

a-y-9

Answer 4

Remove parentheses to see all terms with the correct signs:
-y+5a-4-3a-a-5

Then collect like terms:
-y+a-9

Finally, place in order of variables:
a-y-9