2(1-x)<-6如何解?要具体过程 2×(x-16)=6解方程过程?
2(x-1\uff09²-6=0\u65b9\u7a0b\u600e\u4e48\u89e3\uff0c\u8981\u5177\u4f53\u6b65\u9aa4\uff01\u591a\u8c22\uff01\u89e3
2(x-1)²=6
(x-1)²=3
x-1=\u221a3\u6216x-1=-\u221a3
x=1+\u221a3\u6216x=1-\u221a3
\u89e3\u9898\u6b65\u9aa4:
2\u00d7(x-16)=6
2x-32=6
2x=6+32
2x=38
x=19
\u63d0\u9ad8:
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2(1-x)<-6 思路如下,具体标准过程就需要按照教科书上来书写了
(1-x) < -6÷2
1-x < -3
-x<-3-1
-x<-4
x>4
数学3x-7+4x=6x-2, 4-3x=3-2x, (x+1)-2(x-1)=1-3x, 2(x-2)-6(x-1)=3(1-x),,解:7*-7=6*-2解:-3*+2*=-4+3解:x+1-2x+2=1-3x 解:2x-4-6x+6=3-3x *=5 x=1 2x=-2 -4x+2=3-3x x=-1
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