Question

1. x + 3 = 10

2. x + 5 = -11

3. 2x + 6 = 18

4. 2x - 7 = x + 9

5. 3x - 10 = x -9​

Answer 1

Resposta:

1. x + 3 = 10

x = 10 - 3

x = 7

2. x + 5 = - 11

x = - 11 - 5

x = - 16

3. 2x + 6 = 18

2x = 18 - 6

2x = 12

x = 12 / 2

x = 6

4. 2x - 7 = x + 9

2x - x = 9 + 7

x = 16

5. 3x - 10 = x - 9

3x - x = - 9 + 10

2x = 1

x = 1 / 2

x = 0,5