Question

Urgente 75 pontos na respostas

Answer 1

Resposta:

a)

2(a -1) = 3(a +3)

2a -2 = 3a + 9

2a - 3a = 9 + 2

a = - 11

b)

4(2a + 4) = 5(a + 1)

8a + 16 = 5a + 5

3a = - 11

a = - 11/3 = - 3,66..

c)

6(3a -2) = 5(3a -1)

18a - 12 = 15a - 5

3a = 7

a = 7/3 = 2,333...

d)

2(a-1) = 3(a+2)

2a -2 = 3a +6

-a = 8

a = - 8

e)

2(4a -5) = 2(3a -1)

8a - 10 = 6a -2

2a = 8

a = 4

f)

2(2a +4) = 3(a-1)

4a + 8 = 3a -3

a = - 11

Answer 2

Resposta:

a)

2(a -1) = 3(a +3)

2a -2 = 3a + 9

2a - 3a = 9 + 2

a = - 11

b)

4(2a + 4) = 5(a + 1)

8a + 16 = 5a + 5

3a = - 11

a = - 11/3 = - 3,66..

c)

6(3a -2) = 5(3a -1)

18a - 12 = 15a - 5

3a = 7

a = 7/3 = 2,333...

d)

2(a-1) = 3(a+2)

2a -2 = 3a +6

-a = 8

a = - 8

e)

2(4a -5) = 2(3a -1)

8a - 10 = 6a -2

2a = 8

a = 4

f)

2(2a +4) = 3(a-1)

4a + 8 = 3a -3

a = - 11

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