Answer:
Step-by-step explanation:
x-10+3=8
x-7=8
x=15
Answer:
0.007%
Step-by-step explanation:
4000/28=0.007%
Consider number 17. You know that
17=9+8.
Then for negative numbers you have the same rule (with respect to sign -):
-17=(-9)+(-8).
Since (-9)+9=9+(-9)=9-9=0, you have that
-17+9=(-9)+(-8)+9=(-9+9)+(-8)=0+(-8)=-8.
Answer: -17=(-9)+(-8).
The answer to this is 36.