реши уравнение 35+x=200-140 490-x=100+210 200+x=280+600 a-(47+33)=310+210 y+230=9•4+640 (230+670)-x=410+120

35+х = 200-14035+х = 60х = 60-35х = 25490-х = 100+210490-х = 310х = 490-310х = 180200+х = 280+600200+х = 880х = 880-200х = 680а-(47+33) = 310+210а-80 = 520а = 520+80а = 600у+230 = 9×4+640у+230 = 36+640у+230 = 676у = 676-230у = 446(230+670)-х = 410+120900-х = 530х = 900-530х = 370