Question

Bantu jawab nomor 1 dan 3 kak, disertakan caranya Kak.​

Answer 1

Verified answer

1)

a - 4 = 3a

3a - a = -4

2a = -4

a = -2

b = 2b - 5

2b - b = 5

b = 5

2c = 3c + 8

3c - 2c = -8

c = -8

2d - 3 = 11

2d = 11 + 3

2d = 14

d = 7

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3)

2 - 2(a + 2) = 2

2 - 2a - 4 = 2

-2a - 2 = 2

-2a = 2 + 2

-2a = 4

a = -2

3 - 2(b + 1) = -1

3 - 2b - 2 = -1

-2b + 1 = -1

-2b = -1 - 1

-2b = -2

b = 1

-1 - 2(c) = -3

-2c = -3 + 1

-2c = -2

c = 1