15-5x<0 and 5x+6>-14

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

Sole the equation 6n + 9 = -3n - 21 - 6 for n