Question

|7-14x|=28 calculati modulu
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Answer 1

• Exista 2 variante

I

7-14x = 28

-14x = 21

x =

$- \frac{28}{7} = - \frac{3}{2}$

II

-(7-14x)=28

-7+14x = 28

14x = 35

x =

$\frac{35}{14} = \frac{5}{2}$

Deci x€{-3/2 ; 5/2}