Answer:
A) 20 + -9 + -8 + -7
B) 4x + -7y + -5z + 6
C) -3x + -8y + - 4 + -8/7z
Step-by-step explanation:
To SIMP - lify (see what i did there :D ) a negative term into an addition term, we can simp - ly say that a-b = a + (-b). This is just another way to write it, and doesn't change the expression itself. :)
Hope i helped, and vote me brainly
