What is the distance between (-6,-2) and (4,-5)

Which is the most efficient first step to solve x in the equation 3.7x - 18 = -4.3x -34 a. add 3.7x to both sides of the equation. b. add 4.3x to both sides of the equation. c. subtract 18 from both sides of the equation. d. subtract 34 from both sides of the equation.

What is 20+(5 x 2/5 )+ 3 show your work

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15