The answer is B, see how to calculate it ---- x=5+2y -3(5+2y)+2y=7 ///put things from the first equation into the second one --- x=5+2y -15-6y+2y=7 ///reduce --- x=5+2y -4y=7+15 /// move everything without y into right side ----- x=5+2y -4y=22 ////reduce ----- x=5+2y y=-11/2 ///dive by what stands ---- x=5+2*(-11/2) y=-11/2 --- x=-6 y=-11/2
