решить уравнения х+1/4=1/2; 5/8+х=7/8; 9/17-х=5/17; х-4/9=5/9

х+1/4=2/4х=2/4-1/4х=1/4 ИЛИ 0,25_х=7/8-5/8х=2/8х=1/4 или 0,25_х=9/17-5/17х=4/17_х=5/9+4/9х=9/9х=1