If f(x) = x + 2, find the value of x if f(x) = 12.

unknown values: x

equation: x + 2 = 12

answer: 10

find two consecutive even integers such that 5 times the first integer is equal to 4 times the second

unknown values: 2*k,2*k+2

equation: 5*(2*k)=4*(2*k+2)

answer: 8; 10

find two consecutive even integers such that three times the first equals twice the second

unknown values: 2*k,2*k+2

equation: 3*(2*k)=2*(2*k+2)

answer: 4; 6

Find two consecutive even integers such that eight times the first equals seven times the second.

unknown values: 2*k, 2*k+2

equation: 8(2*k)=7(2*k+2)

answer: 14; 16

Find two consecutive even integers such that nine times the smaller is equal to twelve times the larger.

unknown values: 2*k, 2*k+2

equation: 9(2*k)=12(2*k+2)

answer: -8; -6

the sum of three consecutive odd number is 87.find the first number

unknown values: 2*k-1

equation: (2*k-1)+(2*k+1)+(2*k+3)=87

answer: 27

The sum of 3 consecutive odd integers is 27. find the smallest of these integers.

unknown values: 2*k-1

equation: (2*k-1)+(2*k+1)+(2*k+3)=27

answer: 7

the sum of three consecutive odd numbers is 75 what are the smallest of these numbers

unknown values: 2*k-1

equation: (2*k-1)+(2*k+1)+(2*k+3)=75

answer: 23

If x is an odd number and the sum of x and two consecutive odd numbers after x is 57, find the value of x.

unknown values: 2*k-1

equation: (2*k-1)+(2*k+1)+(2*k+3)=57

answer: 17

The product of three-fourths and a number is six. find the number.

unknown values: x

equation: x*3/4=6

answer: 8