Answer:
34
Step-by-step explanation:
(4x-5y)-(x-y) if x=6 and y=-4
step one:
4x=24
5y=-20
24- (-20)= 44
x-y=10
44-10=34
I'm pretty sure I'm right because I worked it out on a calculator and if it changed the minus in 4x-5y to a + then that means the minus here
(4x-5y - < -- (x-y) is not supposed to become a + sign
