I am a four-digit positive integer such that the sum of my digits is 18 and my digits reversed are exactly four times myself. What number am I?

unknown values: n

equation: n = 1000*a + 100*b + 10*c + d

equation: a+b+c+d = 18

equation: 1000*d + 100*c + 10*b + a = 4*n

answer: 2178

find three consecutive odd integers such that the sum of the first, two times the second, and three times the third is 82

unknown values: 2*k+1,2*k+3,2*k+5

equation: (2*k+1)+2(2*k+3)+3(2*k+5) = 82

answer: 11; 13; 15

The sum of three consecutive odd integers is 89 more than twice the largest integer. Find the integers

unknown values: 2*k+1,2*k+3,2*k+5

equation: (2*k+1)+(2*k+3)+(2*k+5) = 89 + 2(2*k+5)

answer: 91; 93; 95

this two-digit number is less than 100.this number is odd.the sum of the digits in the ones place and the tens place is 13.the number in the ones place is less than the number in tens places.The number in the tens place is 2 less than 10.what is the answer?

unknown values: n

equation: n = 10*a + b

equation: a + b = 13

equation: a + 2 = 10

answer: 85

Twice the sum of a number and -6 equals -6 times the sum of the number and 4. Let n stand for the number. Solve for n

unknown values: n

equation: 2(n+(-6)) = -6(n+4)

answer: -3/2 | -1.5

what are the 5 consecutive numbers that their sum equals their product???

unknown values: k-2,k-1,k,k+1,k+2

equation: (k-2)+(k-1)+k+(k+1)+(k+2) = (k-2)(k-1)k(k+1)(k+2)

answer: -2; -1; 0; 1; 2

find three consecutive integers such that the sum of one-half of the smallest and one-third of the largest is one less than the other integer

unknown values: k,k+1,k+2

equation: k/2 + (k+2)/3 = (k+1)-1

answer: 4; 5; 6

The sum of half a number and that number's reciprocal is the same as 51 divided by the number. The number is negative. Find the number.

unknown values: n

equation: n/2 + 1/n = 51/n

equation: n

< 0 answer: -10 The sum of one third of a number and its reciprocal is the same as 49 divided by the number. Find the number unknown values: n equation: n/3 + 1/n = 49/n answer: 12 or -12 What is the sum of the positive multiples of 13 that are less than 300? unknown values: x equation: x = 13 * (1+23)*23/2 answer: 3588