Question

valor de la incognita de

$x + 2 = 10$
$11 + x = 19$
$33 - x = 28$

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Answer 1

¡Hola!

Resolvemos:

1._

$x + 2 = 10 \\ x = 10 - 2 \\ x \: = 8$

2._

$11 + x = 19 \\ x = 19 - 11 = \\ x = 8$

3._

$33 - x = 28 \\ 33 - 28 = x \\ 5 = x$