140 - x = 209
What does x equal??

Ineed to know the answer to this algebra question.

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)