Here, I'll do the first one for you.
When they are talking about a number, use "x".
Since it says twice a number, you say 2x. Or 3x for three times the number
2x+12=3x-31
Then use algebra to find x. Get the numbers on one side and all the x's on the other.
2x+12+31=3x-31+31
2x+43-2x=3x-2x
x=43
Now do the rest on your own!
Answer:
62390
Step-by-step explanation:
you have to round up if it's 5 or more and round down if it's less.
Answer:
Step-by-step explanation:
hope this helps
brainliest appreciated
good luck! have a nice day!
Answer:
-3/3 x -15/2
Step-by-step explanation:
hope this helps
Answer:
12+33 and 33 - (-12)
Step-by-step explanation:
12 - (-33) = 45
12 + 33 gives us 45
33 - (-12) gives us 45
