(x-348)➕ 159=601 468(259-x)=382
А) (х-348)+159=601 х-348=601-159 х-348=442 х=442+348 х=790 (790-348)+159=601 601=601 б)957-(х+336)=428 х+336=957-428 х+336=529 х=529-336 х=193 957-(193+336)=428 428=428