Question

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me ajudem por favor​

Answer 1

Explicação passo-a-passo:

.

$3x = 15$

$x = \dfrac{15}{3}$

$x = 5$

.

$2x = 14$

$x = \dfrac{14}{2}$

$x = 7$

.

$25x = 0$

$x = \dfrac{0}{25}$

$x = 0$

.

$7x = - 21$

$x = - \dfrac{21}{7}$

$x = - 3$

.

$9x = - 9$

$x = - \dfrac{9}{9}$

$x = - 1$

.

$35x = - 105$

$x = - \dfrac{105}{35}$

$x = - 3$

.

$\dfrac{x}{3} = 7$

$x = 21$

.

$\dfrac{x}{4} = - 3$

$x = - 12$

.

$\dfrac{2x}{5} = 4$

$2x = 20$

$x = \dfrac{20}{2}$

$x = 10$

.

$\dfrac{2x}{3} = - 10$

$2x = - 30$

$x = - \dfrac{30}{2}$

$x = - 15$

.

$\dfrac{3x}{4} = 30$

$3x = 120$

$x = \dfrac{120}{3}$

$x = 40$