№813
34,98х-33,98х+24х=87,29
х+24х=87,29
25х=87,29
х=87,29÷25
х=3,4916
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56,289х+45,07х-100,359х=52,15
45,07х-44,07х=52,15
х=52,15
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25,5х-13,08х-12,42х=52,907
25,5х-25,5х=52,907
0×х=52,907
уравнение не имеет корней
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186,37х-95,327х-52,043х=12,48
186,37х-147,37х=12,48
39х=12,48
х=12,48÷39
х=0,32
№816
а)0,3×(23,316÷5,8+0,5175÷0,75)-1,413=0
1)23,316÷5,8=4,02
2)0,5175÷0,75=0,69
3)4,02+0,69=4,71
4)0,3×4,71=1,413
5)1,413-1,413=0
б)0,3×23,316÷5,8+0,5175÷0,75-1,413=0,483
1)0,3×23,316=6,9948
2)6,9948÷5,8=1,206
3)0,5175÷0,75=0,69
4)1,206+0,69=1,896
5)1,896-1,413=0,483
в)0,3×23,316÷5,8+0,3×0,5175÷0,75-1,413=0
1)0,3×23,316=6,9948
2)6,9948÷5,8=1,206
3)0,3×0,5175=0,1552
4)0,1552÷0,75=0,2069
5)1,206+0,2069=1,4129≈1,413
6)1,413-1,413=0
г)23,316÷0,58+0,3×0,5175÷0,75-1,413=2,8139
1)23,316÷0,58=4,02
2)0,3×0,5175=0,1552
3)0,1552÷0,75=0,2069
4)4,02+0,2069=4,2269
5)4,2269-1,413=2,8139≈2,8139