Can you help me solve another math problem?

Question

Okay here it goes:
The sum of three consecutive integers is 90.
a.) Find the three numbers by letting x represent the first integer.
b.) Find the three numbers by letting x represent teh second integer.

Answer 1

1.
x +x+1+x+2=90
3x+3=90
3x=87
x=29
so,the 3 integers r-29,30 and 31.

2.
x-1+x+x+1=90
3x=90
x=30
so,the numbers are 29,30,31.

Answer 2

a) Let x = the first integer. Since we want three consecutive integers, the following two integers will be (x + 1) and (x + 2).

x = the first integer
x + 1 = the second integer
x + 2 = the third integer

Their sum is 90, so

x + (x + 1) + (x + 2) = 90
3x + 3 = 90
3x = 87
x = 29

Since the first integer is 29, the second and third would be 30 and 31. The answer is 29, 30, 31.

b) Let x = the second integer. That means the first integer would be (x - 1) and the third integer will be (x + 1).

Their sum should be 90, so

x + (x - 1) + (x + 1) = 90

Notice how the (-1) and (+1) conveniently cancel out.

x + x + x = 90
3x = 90
x = 30

And now that we know the second integer is 30, we can derive the first integer to be 29 and the second integer to be 31, making the numbers 29, 30, 31.

Answer 3

a) The three integers are, x,x+1, x=2,
The sum is 3x+3 =90: 3x = 87. x = 29.
The integers are, 29, 30, 31.

B) The integers are, x - 1, x , x + 1.
The sum is 3 x = 90. x = 29.
The integers are 29, 30, 31..

Answer 4

This is a no-brainer, the middle number must be 30.
a) Let x represent the first number, then:
x + (x+1) + (x+2) = 90
Remove brackets & gather like terms:
3x + 3 = 90
Take 3 from both sides:
3x = 87
x = 87/3 = 29
Numbers are 29, 30, 31

Answer 5

x + (x + 1) + (x + 2) = 90
x + x + 1 + x + 2 = 90
3x + 3 = 90
3x = 87
x = 29

29 + 30 + 31 = 90

Answer 6

x+(x+1)+(x+2)=90
3x+3=90
3x=87
x=29
three numbers are 29, 30 and 31
(x-1)+x+(x+1)=90
3x=30
x(the second integer)=30
three numbers are 29, 30 and 31

Answer 7

29 + 30 + 31 = 90. Are you retarded or something?

Answer 8

the 1st deliver is shifting at 24 miles consistent with hour, and it have been given to commute for 3 hours.. it incredibly is seventy two miles. the 2d deliver left on the three hour mark and is going 32 miles consistent with hour. by using fact the 1st deliver is going 24 mph, this may be a income of 8 mph. you're taking seventy two/8 and get 9 hours. So 9 hours after the 2d deliver leaves dock, it catches up with the 1st deliver.