Question

Решите уравнения, . |y+5|=3 |7-y|=-2 |6y-2|+8=5 |4x-3|=0 |4-5x|=0 |9x+2|-3(в кубе)=(-3(в кубе)) 1,7|x|+4,9=10

Answer 1

$|y+5|=3, \\ \left [ {{y+5=-3,} \atop {y+5=3;}} \right. \left [ {{y=-8,} \atop {y=-2;}} \right.$

$|7-y|=-2\ \textless \ 0, \\ y\in\varnothing;$

$|6y-2|+8=5, \\ |6y-2|=-3\ \textless \ 0, \\ y\in\varnothing;$

$|4x-3|=0, \\ 4x-3=0, \\ 4x=3, \\ x=0,75;$

$|4-5x|=0, \\ 4-5x=0, \\ 5x=4, \\ x=0,8;$

$|9x+2|-3^3=-3^3, \\ |9x+2|=0, \\ 9x+2=0, \\ 9x=-2, \\ x=-\frac{2}{9};$

$1,7|x|+4,9=10, \\ 1,7|x|=5,1, \\ |x|=3, \\ \left [ {{x=-3,} \atop {x=3.}} \right.$