Respuesta :

Answer:

x= 10

Step-by-step explanation:

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Answer:

x = 10

Step-by-step explanation:

3.4x - 1.3x - 7 - 9 = 5

2.1x - 7 - 9 = 5

2.1x - 16 = 5

2.1x - 16 + 16 = 5 + 16

2.1x = 21

2.1x ÷ 2.1 = 21 ÷ 2.1

x = 10

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