ПОМОГИТЕ С УРАВНЕНИЕМ:
a)7y=-95,4-2y
б)5,2+0,5*(x-3)=3-0,8*(x+4)
в)1/11-1/3x=4 1/11-3x
a)7y=-95,4-2y
б)5,2+0,5*(x-3)=3-0,8*(x+4)
в)1/11-1/3x=4 1/11-3x
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Answers & Comments
7 у + 2 у = -95 , 4
9у = - 95 , 4
у = - 95, 4 : 9
у= -10 , 6
5, 2 + 0, 5 ( х - 3) = 3 - 0, 8 (х + 4)
5, 2 + 0, 5 х - 1, 5 = 3 - 0, 8 х - 3, 2
0, 5 х + 0, 8 х = 3 - 3, 2 - 5, 2 + 1, 5
1 , 3 х = - 3, 9
х = - 3, 9 : 1, 3
х= - 3
1 / 11 - 1 /3 х = 4 1/11 - 3 х
3х -1 / 3 х = 4 1/11 - 1/11
2 1/3 х = 4
х= 4 : 2 2/3
х= 1 1/2