What value of x makes the equation true?

1.4x+2.6x=−16

a.) x=−19

b.) x=−48

c.) x=−4

d.) x=−13

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)