September 2018 3 22 Report
Zad. 1
Opuść i zredukuj wyrazy podobne:
a. ( 5a - 7 ) + ( 3a - 9) =
b. ( 6x - 4y) - ( -2x + 6 ) =
d. ( - 3a - 12b - 7 ) + ( 5a + 6b - 4 ) =
e. ( 5a - 11b + 4 ) + ( 7a + 8b ) - ( 7b - 8 ) =

pomóżcie ! ;)
pozdrawiam ! ;D
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