1. ab (9+5c) = 2. 4 b x(3 + 7y) = 3.- 5,1x(3-6y+2z) = 4.- (5,5a+3,3 b +2,2c) = 5. (-59c +24x-31y) = 6.-(-5,5xy+4p-7,9ck) = 7. (4+8x-59y) = 8. 4+(6,5p-4,7c) = 9.9a-23c(3b-2x) = 10. (7+6c) − (7+6c)+9= - - пж ​