starboy3506
18.08.2019 •
Mathematics
Me! : (
1. twice a number increased by 12 is equal to 3 times the number minus 31. find the number.
2. twelve decreased by twice a number is -7. what is the number?
3. three consecutive intergers have a sum of -33. what are the intergers?
4. the sum of 4 times a number and 14 is 16. what is the number?
5. the sum of 3 times a number and 17 is 5. what is the number?
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Ответ:
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!
Ответ:
6ft 864inch
Step-by-step explanation: