Question

32.9. 1) (a - 45) - Bab - 17b
3) (50 - 6)-(5a-6)(5a + 6)
6) 15+ (0,4 + c) - 0,8c
2) -9c+(3c+d) - d
4) (76 - 1)(t + 7) + (7b+t)​

Answer 1

3)80-25а2
6)15,4+0,2с
2)-6с
4)76t+525+7b