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a fost răspuns

2x+2y
6a-6b-6c
6x-4y
4x+6x
2a-2b
4x +8xy
12x12×12×12-8x+4x
0,4a - 1,2b

Răspuns :

123678
2x+2y=2(x+y)
6a-6b-6c=6(a-b-c)
6x-4y=2(3x-2y)
4x+6x=10x
2a-2b=2(a-b)
4x+8xy=4x×(1+2y)
12x12×12×12-8x+4x=20736-8x+4x=20732x
0.4a-1.2b= 2/5a - 6/5b = 2/5 × (a-3b)

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