3сынып математика 40бет 10есеп

x * 19 = 0x = 078 * x = 78x = 78 : 78x = 10 = 17*xx = 052 = x * 52x = 52 : 52x = 143 = 43 * xx = 43 : 43x = 1

1)х=02)х=13)х=04)х=15)х=1