Question

Encontrar el valor de x en cada caso
$5 \times - 10 \\ \times + 2$
$x + 7 \\ 2 \times \div 25$


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Answer 1

Respuesta:

1.

$5x - 10 = 0\\5x = 10\\x = \frac{10}{5}\\ x =2$

Comprob.

$5x - 10 = 0\\5(2) - 10 = 0\\10 - 10 = 0$

2.

$x + 2 = 0\\x = -2$

Comprob.

$x + 2 = 0\\-2 + 2 = 0$

3.

$x + 7 = 0\\x = -7$

Comprob.

$x + 7 = 0\\-7 + 7 = 0$

4.

$\frac{2x}{25} =0\\\\2x = 0(25) \\2x= 0\\x = 0(2)\\x=0$

Comprob.

$\frac{2x}{25} = 0\\\\\frac{2(0)}{25} = 0\\\\\frac{0}{25} = 0\\\\0=0$

Espero haberte ayudado (: