-9-(-12)=-9+12=3
-9-12=-9+(-12)=-21
Answer:
40
60
Step-by-step explanation:
20÷2=10
10×4=40
10×6=60
Answer:
Daniel (now) is 3 years old, (2 years ago) is 1 year old.
Kevin (now) is 6 years old, (2 years ago) is 4 years old.
Step-by-step explanation:
Now:
-Kevin: k = d + 3
-Daniel: d
2 years ago:
-Kevin: k - 2 = 4(d - 2)
-Daniel: d - 2
We have the equation:
(k - 2) + 2 = k
4(d - 2) + 2 = d + 3
4d - 8 + 2 = d + 3
3d - 6 = 3
3d = 9
d = 3
k = d + 3 = 3 + 3 = 6
Both is the answer to the problem
Answer:
Step-by-step explanation:
-180=-10v+10
-190=-10v
v=19
