Answer:
X=3
Step-by-step explanation:
1 this is rlly easy but anyways.
What you can do is 7-4 which is 3 so x=3 or you can just use your fingers and count up to 7 and that would also take 3 if you were to start at 4 and to make sure you got it right you can also do 7-3 and that would equal 4 so you answer is x=3
use a calculator / solve for x calculator
1. 458 - 247 = 211
2. 58.92 - 43.87 = 15.05
3. 51/8 - 15/8 = 4.5
Here you go ! Hope this helps !
perimeter =2 (l+b)
140=2 (l+40)
140=2l+80
120/2=l
l=60
Or if you don't want any rounding it will be 115.38461538461
D. 19 houses
