|2х+14|=6 |8х+12|=20 |9х+15|=6 Буду благодарна!

|2х+14|=6 1)2x+14=6  ⇒  2x=-8  ⇒  x=-4 2)2x+14=-6  ⇒ 2x=-20  ⇒  x=-10 |8х+12|=20 1) 8x+12=20   ⇒ 8x=8   ⇒   x=1 2) 8x+12=-20  ⇒ 8x=-32  ⇒  x=-4 |9х+15|=6 1) 9x+15=6   ⇒  9x=-9   ⇒  x=-1 2) 9x+15=-6  ⇒  9x=-21  ⇒ x=-21/9=-7/3

|2х + 14| = 6 2x + 14 = 6   2x =  -14 + 6    2x =  - 8 х = -8 : 2  х = - 4 2x + 14 = -6 2x =  - 6 -14 2х = -20 x= - 20 : 2  х = -10 ............................................................................................................. |8х + 12| = 20 8x + 12  = 20 8x =  20 - 12 8х = 8 х =8 : 8  х = 1 8x + 12 = -20 8x = - 20 -12 8х = - 32 х = -32 : 8 х= - 4 .................................................................................................................. |9х + 15| = 6 9x+15 = 6 9x = 6 - 15 9х = -9 х = - 9 : 9  х = -1 9x + 15 = -6 9x =  - 6  -15  9х = - 21 х = -21 : 9 х = - 2 целых 3/9 = - 2 целых 1/3