小学数学六年级115页最后一题和116 117页题目怎么做四题方程解题假设法假设法像113页的假设法就行
\u5c0f\u5b66\u516d\u5e74\u7ea7\u4e0a\u518c\u6570\u5b66\u4eba\u6559\u7248\u7b2c115\u98751.2.3\u9898\u7528\u65b9\u7a0b\u89e3\u7b541.\u89e3\uff1a\u8bbe\u9f9f\u6709x\u53ea\uff0c\u5219\u9e64\u6709\uff0840-x\uff09\u53ea\u3002
4x+2\uff0840-x\uff09=112
4x+80-2x=112
2x=32
x=16 40-16=24\uff08\u53ea\uff09 \u7b54\uff1a\u9f9f\u670916\u53ea\uff0c\u9e64\u670924\u53ea\u3002
2.\u89e3\uff1a\u8bbe\u5927\u8239\u79df\u4e86x\u6761\uff0c\u5219\u5c0f\u8239\u79df\u4e86\uff088-x\uff09\u6761\u3002
6x+4\uff088-x\uff09=38
6x+32-4x=38
2x=6
x=3 8-3=5\uff08\u6761\uff09 \u7b54\uff1a\u5927\u8239\u79df\u4e863\u6761\uff0c\u5c0f\u8239\u79df\u4e865\u6761\u3002
3.\u89e3\uff1a\u8bbe\u7537\u540c\u5b66\u6709x\u4eba\uff0c\u5219\u5973\u540c\u5b66\u6709\uff0812-x\uff09\u4eba\u3002
3x+2(12-x)=32
3x+24-2x=32
x=8 12-8=4\uff08\u4eba\uff09 \u7b54\uff1a\u7537\u540c\u5b66\u67098\u4eba\uff0c\u5973\u540c\u5b66\u67094\u4eba\u3002
\u8bbe\u9f9f\u6709X\u53ea\uff0c\u5219\u9e64\u8fd940-X\u53ea\uff1b
\u9f9f\u4e3a4\u53ea\u817f\uff0c\u9e64\u4e3a2\u53ea\u817f\uff0c\u5217\u65b9\u7a0b\uff1a
4X+2*\uff0840-X\uff09=112
\u5f97X=16\u53ea
40-16=24\u53ea
\u9f9f\u4e3a16\u53ea\uff0c\u9e64\u4e3a24\u53ea
男生：12-4等于8人
我知道是人教版的，下面的快点算，我就没事了。楼主好会抄答案！
哪个版本？
7
哪个版本？
绛旓細鍋氫竴鍋 1.鍋囪楣ゆ湁40鍙40X2=80锛堝彧锛112-80=32锛堝彧锛夐緹锛32梅2=16锛堝彧锛夐工锛80-16=24锛堝彧锛2.瑙ｏ細璁炬湁X鍙緹锛屾湁锛40-X锛夊彧楣ゃ4X+2锛40-X锛=112 2X+80=112 2X=112-80 2X=32 X=32梅2 X=16 40-16=24锛堝彧锛
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