October 2018 2 16 Report

a). 2x - 3y + 4x - 12y - 5x =

b). 0,2x + (6-0,4 + 3x) - (2y + 1) =

c). -5,1/4a + 2,5b + (-1,5a + 6 1/4b)=

d). 4(x-2y) - (3x+y) + 6y =

e). 2/5(-xy - 5y + 10x) - 4(-y + x) - 2 (3xy + y) 1/2

f). 3-2a

_________

5a dla a =5

g). 6b - 4a + 3a - 7b - 2a =

h). 0,4x - (6 - 0,4y + 6x) + (2y - 1)

i). (3 1/2a + 2,5b) - (-1,2a + b 1/2) =

j). 2/5(-x - 5xy + 10y) - 4 ( 2y - x) - 2 *(-3xy + y) 1/2=


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