Предмет: Математика, автор: Юбка007

 Решить уравнение            1)   0,3-(7,1+х)=-1,5                            2)        х+11-(2х-5)=0

Ответы

Автор ответа: Алинка1200
0
1)0,3-(7,1+х)=-1,5
0,3-7,1-х=-1,5
-6,8-х=-1,5
-х=-1,5+6,8
-х=5,3
х=-5,3

2) 11-(2х-5)=0 2х-5=0-11 2х-5=-11 2х=-11-5 2х=-6 х=-6:2 х=-3 11-(2*(-3)-5)=0

Автор ответа: ibelimgotov
0
1)7,1+х=-1,5-0,3                               
7,1+х=1,2
х=7,1-1,2
х=5,9


Автор ответа: Юбка007
0
и 1 не правильно !
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