Question

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Answer 1

Respuesta:

1. 5x + 4 = 49

5x = 49 - 4

5x = 45

x = 45 : 5

x = 9

2. 3x + 1 = 31

3x = 31 - 1

3x = 30

x = 30 : 3

x = 10

3. 7x + 1 = 36

7x = 36 - 1

7x = 35

x = 35 : 7

x = 5

4. 9x + 1 = 91

9x = 91 - 1

9x = 90

x = 90 : 9

x = 10

5. 2x + 9 = 13

2x = 13 - 9

2x = 3

x =

Explicación paso a paso: