Реши уравнение :2)7y+2y-34=83
7y+2y-34=83 9y-34=83 9y=83+34 9y=117 y=13
9y=83+34
7у+2у-34=83 9у=83+34 9у=117 у=117:9 у=13
7y+2y-34=83
9y-34=83
9y=117
y=13