1) |х| = 7 - 4;|х| = 3;х = 3;- х = 3;х = - 3.Ответ: х = 3 и х = - 3.2) |х + 6| = 30 : 2;|х + 6| = 15;х + 6 = 15;х = 15 - 6;х = 9;- (х + 6) = 15;- х - 6 = 15;- х = 15 + 6;- х = 21;х = - 21.Ответ: х = 9, х = - 21.3) |х| = 3 + 8;|х| = 11;х = 11;- х = 11;х = - 11.Ответ: х = 11, х = - 11.4) |4х - 7| = 11- 6;|4х - 7| = 5;4х - 7 = 5;4х = 5 + 7;4х = 12;х = 12 : 4;х = 3;- (4х - 7) = 5;- 4х + 7 = 5;- 4х = 5 - 7;- 4х = - 2;х = - 2 : (- 4);х = 0,5Ответ: х = 3, х = 0,5.