Answer:
frdg
Step-by-step explanation:
Additive identity because that is the property when you add something to 0 and get the same thing
Multiply first equation with 2. Then add first and second, we get -x=6. X=-6 and y=-29
Answer:
72.7
Step-by-step explanation:
First multiply 72 by 10
because 72 is 72 10s, making it a whole number.
then add 720 (72 times 10) to 7.
then all of that over 10.
then just divide.
727/10
72.7
this is what you do for all mixed numbers like that one.
