Answer:
148.5
Step-by-step explanation:
times all
5
- 2a = - 20 | x (-)
2a = 20
a = 20 : 2
a = 10
None on the above.
Here’s what I got:
1/5^-1.
3+(-4)=-1
5^-4/5^3 = 1/5^-1
4-9 = 4+(-9)
-6-7 = -6+(-7)
-4-(-9) = -4 + 9
6-(-7) = 6+7
Double negatives means a positive and one positive and one negative is a negative.
Please give brainliest. I am working hard to get it.
