①7x=6x﹢4②2x+3=11‐6x③3.4x‐9.8=1.4x﹢9④4x‐3﹢3x=6x‐2
1个回答
7x-6x=4
x=4
2x+6x=11-3
8x=8
x=1
3.4x-1.4=9-9.8
2x=-0.8
x=-0.4
4x+3x-6x=3-2
x=3-2
x=1
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解方程:(1)4x²-6x-3=0 (2)x²+4x-9=2x-11 (3)x(x+4)=8x+12