Question

15-|-x+5|=|-x+5|+11

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Answer 1

$15 - | - x+ 5| = | - x + 5| + 11$

$- | - x + 5| - | - x + 5| = 11 - 15$

$- 2 | - x + 5| = - 4 \: | \div ( - 2)$

$| - x + 5| = 2$

$1) - x + 5 = 2$

$- x = 2 - 5$

$- x = - 3 \: | \times ( - 1)$

$x = 3$

$2) - ( - x + 5) = 2$

$x - 5 = 2$

$x = 2 + 5$

$x = 7$

Answer 2

Răspuns:

15-|-x+5|=|-x+5|+11

=>-|-x+5|-|-x+5|=11-15

=>-2*|-x+5|=-4

=>|-x+5|=2

=> -x+5=2 sau -x+5=-2

deci -x= -3 sau -7

atunci x=3 sau x=7

Explicație pas cu pas: