Question

Уравнения(легкие) я просто темы не учу)))

Answer 1

Пошаговое объяснение:

$|x|=\left \{ {{x,\ x\geq0} \atop {-x,\ x<0}} \right.$

6)

$|x|-1=-5\\|x|=-4\\\left \{ {{x=4} \atop {-(x)=-4}} \right.====>\left \{ {{x=4} \atop {x=-4}} \right.$

7)

$2|x|-5=0\\2|x|=5\\|x|=2,5\\\left \{ {{x=2,5} \atop {-(x)=2,5}} \right. ====>\left \{ {{x=2,5} \atop {x=-2,5} \right.$

8)

$5|x|+1=0\\|x|=-1\\|x|=-0,2\\\left \{ {{x=-0,2} \atop {-(x)=-0,2}} \right. ====>\left \{ {{x=-0,2} \atop {x=0,2}} \right.$

9)

$|5x+3|-3=0\\|5x+3|=3\\\left \{ {{5x+3=3} \atop {-(5x+3)=3}} \right. ====>\left \{ {{x=0} \atop {x=-\frac{6}{5}}} \right.$

10)

$|3x-2|+5=7\\|3x-2|=2\\\left \{ {{3x-2=2} \atop {-(3x-2)=2}} \right. ====>\left \{ {{x=\frac{4}{3}} \atop {x=0}} \right.$