Question

Cancular X, Es urgente ​

Answer 1

Explicación paso a paso:

11)

$40 + (180 - 10x) + (180 - 12x) = 180$

$400 - 22x = 180$

$400 - 180 = 22x$

$220 = 22x$

$10 = x$

12)

$3x + 60 + 180 - 8x = 180$

$240 - 5x = 180$

$240 - 180 = 5x$

$60 = 5x$

$12 = x$