Uprość wyrażenia :
2x + 1 + 3 x =5-3x+7=2,5x - 2,5x + x =2a - 3 a +7 - 6 =3x - 6 +4x + 2 =3x -1-4x+6=
1. 5x+1
2.12-3x
3.x
4.a+1
5.7x-4
6.-x+5
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1. 5x+1
2.12-3x
3.x
4.a+1
5.7x-4
6.-x+5