tolong bantu jawab kak

<p>Keliling jajar genjang = 2 ( sisi &nbsp;a + sisi b ).</p><p>misal sisi a = 5x - 8</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;sisi b = 3x + 10</p><p>Keliling jajar genjang = 52cm</p><p>= 2 ( a+b )</p><p>= 2 ( 5x - 8 + 3x + 10 )</p><p>= 2 ( 5x+3x-8+10 )</p><p>= 2 ( 8x+2 )</p><p>= 16x+4</p><p>16x+4= 52</p><p>16x = 52-4</p><p>16x = 48</p><p>&nbsp; &nbsp; &nbsp;x = 48:16</p><p>&nbsp; &nbsp; &nbsp;x = 3</p><p>Sisi a = 5x-8</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 5(3)-8&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 15-8 = 7</p><p>Sisi b = 3x+10</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 3(3)+10</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 9+10 = 19</p><p>Jadi panjang sisi-sisinya = 7cm dan 19cm.</p>