Решите уравнение (c-120)•70=280 x:(160:8)=105 y+127=72782:241 c+12•7=12•7 x:(160:8)=0 Y+(127-127)=72782:241

 (c-120)•70=280с-120=280/70с-120=4с=4+120с=124x:(160:8)=105x/20=105x=105*20x=2100 y+127=72782:241y+127=302y=302-127y=175 c+12•7=12•7c+84=84c=84-84c=0x:(160:8)=0 x/20=0x=0*20x=0Y+(127-127)=72782:241y+0=302y=302-0y=302