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wnalegend123
2 năm trước
a,5.(2x-3)-4(5x-7)=19-2(x+11) b,5x+3,5+(3x-4)=7x-3(x-0,5) c,7.(4x+3)-4(x-1)=15(x+0,75)+7 d,3x-2,42+0,8x=3,38-0,2x
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