Сократите: а)1+(0,5x-3)-(1,5x-4) б)1-2y+4+1-5y
1+0.5x-3-1.5x+4=2-x
1-2y+4+1-5y=6-7y
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1+0.5x-3-1.5x+4=2-x
1-2y+4+1-5y=6-7y