Question

4×-1=11

9×+6=8×

(3×=)3×-1=×

11×+12=9×+13​

Answer 1

Explicação passo-a-passo:

4x - 1 = 11

4x = 11 + 1

4x = 12

$x = \frac{12}{4}$

x = 3

9x + 6 = 8x

9x - 8x = - 6

x = - 6

3x - 1 = x

3x - x = 1

2x = 1

$x = \frac{1}{2}$

x = 0, 5

11x +12 = 9x + 13

11x - 9x = 13 - 12

2x = 1

$x = \frac{1}{2}$

x= 0, 5