Question

|2x+7|=3 решить неравенство

Answer 1

|2x+7|=3
2x+7=3⇒x=-2
2x+7=-3⇒x=-5

Answer 2

$|2x+7|=3 \ left { {{2x+7=3} atop {2x+7=-3}} right. left { {{2x=3-7} atop {2x=-3-7}} right. left { {{2x=-4} atop {2x=-10}} right. left { {{x=-2} atop {x=-5}} right.$