Question

4x + 3 = 3x + 5
7x - 12 = 5x + 16
9x + 8 = 7x + 6​

Answer 1

Respuesta:

• x = 2
• x = -14
• x = 1

Explicación paso a paso:

4x + 3 = 3x + 5

4x = 3x + 5 - 3

4x = 3x + 2

3x - 4x = 2

-1x = 2

x = 2 ÷ -1

x = 2

7x - 12 = 5x + 16

7x = 5x + 16 + 12

7x = 5x + 28

5x - 7x = 28

-2x = 28

x = 28 ÷ -2

x = -14

9x + 8 = 7x + 6

9x = 7x + 6 - 8

9x = 7x + -2

7x - 9x = -2

-2x = -2

x = -2 ÷ -2

x = 1