1) 9x-4x+39=94 2) 7y+2y-34=83 РЕШИТЕ СРОЧНО! СПАСИБО
9x - 4x + 39 = 94 5x + 39 = 94 5x = 94 - 39 5x = 55 x = 55 : 5 x = 11 7y+2y-34=83 9y - 34 = 83 9y = 83 + 34 9y = 117 y = 117 : 9 y = 13