Answer:
Inverse property of addition
Step-by-step explanation:
When you add two opposite numbers (4/5 is the opposite of [-4/5]) the answer is always zero.
X * 0.85 = 136
x = 136/0.85
x = 160
hope this helps :)
Answer:
228
Step-by-step explanation:
21 + 28 = 49 students
Ration of history 21 to students 49 = d)21:49