Zapisz wyrażenia , nie używając nawiasów . Zredukuj wyrazy podobne.
a) 4a-(4b-2a)=
b) -(2x+1) - (3x-1) =
c) -(5x-8) - 5 =
d) (3m-n) + 3n-m) =
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a) 4a - (4b - 2a) = 4a - 4b + 2a = 6a - 4b
b) -(2x+1) - (3x-1) = -2x - 1 - 3x + 1 = -5x
c) -(5x-8) - 5 = -5x + 8 - 5 = -5x + 3
d) (3m-n) + 3n-m) = 3m - n + 3n - m = 2m + 2n
a) 4a-4b+2a = 6a-4b
b) -2x-1-3x+1 = -5x
c) -5x+8-5 = -5x+3
d) 3m-n+3n-m = 2m+2n