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3-2x+10=x+1,
移項(xiàng),合并同類項(xiàng),得
-3x=-12,
化系數(shù)為1,得
x=4;
(2)由原方程移項(xiàng),得
8(x-2)=2,
去括號(hào),得
8x-16=2,
移項(xiàng),得
8x=18,
化系數(shù)為1,得
x=
9 |
4 |
(3)去括號(hào),得
3x-1+2+3x=7,
移項(xiàng)、合并同類項(xiàng),得
6x=6,
化系數(shù)為1,得
x=1;
(4)去分母,得
x-24+6x=-24,
移項(xiàng),合并同類項(xiàng),得
7x=0,
化系數(shù)為1,x-0.