Question

-2,5a×1,2×(-4b)=

8×(-3x)×0,25y=

7x-5x+3x=

-9-y+13-8y=

15a-2b-4a+9b=

4c-5b+7c-6b=

Answer 1

-2,5a×1,2×(-4b)=12

8×(-3x)×0,25y=-6

7x-5x+3x=5

-9-y+13-8y=14

15a-2b-4a+9b=18

4c-5b+7c-6b= 0

Answer 2

1) 12аb
2)-6xy
3)(7-5+3)x=5x
4)4-9y
5)11a+7b
6)11c-11b=11(c-b)