Номер 1288
1) 2x + 7x = 9x
2) 5y – y = 4y
3) 9m + m = 10m
4) 3b + b – 2b = 2b
5) –3a – 2a = –5a
6) 3p + 3p = 6p
7) –2n + n = –n
8) 9а – 8а – а = 0
1) 2x + 7x = 9x
2) 5y – y = 4y
3) 9m + m = 10m
4) 3b + b – 2b = 2b
5) –3a – 2a = –5a
6) 3p + 3p = 6p
7) –2n + n = –n
8) 9а – 8а – а = 0