1) 3x²-4x+1-x²+3x-7= 2x²-х-6
2) 5y⁶-x³+8-6y⁶+5x=8-y⁶-x³+5x
3) 5+10x-6x²-3x²+10x-4=1+20х-9x²
4) m+2n²+n³-3m²+4m=5m+2n²+n³-3m²
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1) 3x²-4x+1-x²+3x-7= 2x²-х-6
2) 5y⁶-x³+8-6y⁶+5x=8-y⁶-x³+5x
3) 5+10x-6x²-3x²+10x-4=1+20х-9x²
4) m+2n²+n³-3m²+4m=5m+2n²+n³-3m²