Решите уравнения (56+24)+x=340+60 x-(60-25)=540-300 x: (8•9)=8•9 (750-25)•y=0 750-25•y=0

56+24+х=400
80+х=400
х=400-80=320
2)х-35=240
х=240+35=275
3)х:72=72
х=72*72
х=5184
4)725*у=0
у=0
5)750-25у=0
25у=750
у=750:25=30

56+24+×=340+60. ×-6-25=540-300
56+24+×=400. ×-35=240
80+×=400. ×=240+35
×=400-80. ×=275
×=32
×:(8×9)=8×9. (750-25)×¥=0
×:72=72. 725×¥=0
×=5084. ¥=725
750-25×¥=0
25×¥=750
¥=750:25
¥=30