1)а) 968 - 515:5968 = 612515:5 = 103612 - 103 = 509
б) 86(258+246):129258 + 246 = 50486 504 = 43,34443,344 : 129 = 336
2)а) 45m 2 = 90m
б) x 14 10 = 140x
1)
а) 968 - 515:5
968 = 612
515:5 = 103
612 - 103 = 509
б) 86(258+246):129
258 + 246 = 504
86 504 = 43,344
43,344 : 129 = 336
2)
а) 45m 2 = 90m
б) x 14 10 = 140x