Решить 9х-4х+39=94 7у+2у-34=83
9х - 4х + 39 = 94 7у + 2у - 34 = 83 5х = 94 - 39 9у = 83 + 34 5х = 55 9у = 117 х = 11 у = 13
9x-4x+39=94 9x-4x=94-39 5x=55 x=55 : 5 x=11 7y+2y-34=83 7y+2y=83+34 9y=117 y=117 : 9 y=13