Question

помоги пожалуйста решить ​

Answer 1

Ответ:

Пошаговое объяснение:

2) 4n = -2 + 6n

4n - 6n = -2

-2n = -2

2n = 2

n = 1

4)3x + 7 = x

3x - x + 7 = 0

3x - x = 7

2x = -7

x = -7/2 = -3(1/2)

6)-16 - m = -2m

-16 - m + 2m = 0

-m + 2m = 16

m = 16

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2)2 - c = 5c + 1

2 - c - 5c - 1 = 0

-c - 5c = -2 + 1

-6c = -1

6c = 1

c = 1/6

4)-3d - 10 = 3d - 6

-3d - 10 - 3d - 6 = 0

-3d - 3d = 10 + 6

-6d = 16

d = -16/6 = -2(2/3)

6)-7 - 4x = -7x + 5

-7 - 4x +7x - 5 = 0

-4x + 7x = 7+5

3x = 12

x = 4

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2)z + 4 - 3 = 2z

z + 4 - 3 - 2z = 0

z - 2z = -4 + 3

-z = -1

z = 1

4)7 - 3x = 4x - 9

7 - 3x - 4x + 9 = 0

-3x - 4x = -7 - 9

-7x = - 16

7x = 16

x = 16/7 = 2(2/7)

6)10y - 3 = 5 + 3y

10y - 3 - 5 - 3y = 0

10y - 3y = 3 + 5

7y = 8

y = 8/7 = 1(1/7)

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2)3.2 - 5a = -1.8a + 4

3.2 - 5a + 1.8a - 4 = 0

-5a + 1.8a = -3.2 + 4

-3.2a = 0.8

3.2a = -0.8

a = -0.8/3.2

4)8.6x - 3.7 = 7.6x - 5

8.6x - 3.7 - 7.6x + 5 = 0

8.6x - 7.6x = 3.7 - 5

x = 3.2