Solve and check please i need help

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°