The product of a number and twelve

Five less than a number.

The quotient of 6 and a number

Half of a number

The sum of six and a number

A number decreased by ten

Eleven less than three times a number

Fifty divided by two times a number

Three times a number is twenty-one.

Four times a number increased by seven

A number increased by seventeen is twenty-two.

Twice a number is seventy-six.

Twelve less than a number is thirty.

Six is fifteen less than three times a number.

Sixty divided by four times a number

Twice a number, decreased by nineteen