1126. Решите уравнение: 1) -3y - 9y + 5у = 2,1;
2) -2,4m + 3,8m + 1,2m = -0,052; 8 1 21 3
3) - а 5 a+ a- 7 6 a= 49 ; 7 3
4) -8 с +10 c-3-c=-3 16 8 19 24 16
5) 2,3x- (-7,2)x+x (-1,5) = -2,4;
6) 3,4y + y (-8,1) (-2,2) y = -10. . ;
помогите пожалуйста,дам 30 баллов ​
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