7х-х=4-16
6х=-8
х=-8:6
х= - 8\6
х=- 4\3
х= - 1 1\3
Угол 1 = углу 3 = 66
угол 2 = углу 4 = 114
5х - 16 = 7 - 5 * ( 2х - 3 )
5х - 16 = 7 - 10х + 15
5х + 10х = 22 + 16
15х = 38
Х = 38/15
Х = 2 ( 8/15 )
<span>3р(2р+4)2р(2р-3)=6р2(4р2-6р+8р-12)=24р4+12р3-72р<span>2</span></span>