Математика пж ребят помогите

Ответ:

1): -3y-9y+5y = 2.1

-7y = 2.1

y = 0.3

2): -2.4m+3.8m+1.2m = -0.052

2.6m = -0.052

m = 0.02

3): -3/7a+5/6a-8/21a = -1/49

1/42a = -1/49

a = -6/7

4): -8 7/16c+10 19/24c -3 3/8c = -3 1/16

-49/48c = -3 1/16

c = 3

5): 2.3x-(-7.2)×x+x×(-1.5) = -2.4

9.5x-1.5x = -2.4

8x = -2.4

x = -0.3

6): 3.4y+y×(-8.1)-(-2.2)×y = -10

3.4y-8.1y+2.2y = -10

-2.5y = -10

y = 4

Ответ:

1) 0.3

2)0.02

3)-6/7

4)3

5)-0.3

6)4