ответ
7 х+2 х+9 х=180
18 х=180
х=180/18
х=10
70;. 20;. 90
Пусть ∡K = 7х, ∡L = 2х, ∡P = 9х.
7х+2х+9х = 180°
18х = 180°
х = 10°.
∡K = 7х = 7*10° = 70°
∡L = 2х = 2*10° = 20°
∡P = 9х = 9*10° = 90°.
ответ
7 х+2 х+9 х=180
18 х=180
х=180/18
х=10
70;. 20;. 90
Пусть ∡K = 7х, ∡L = 2х, ∡P = 9х.
7х+2х+9х = 180°
18х = 180°
х = 10°.
∡K = 7х = 7*10° = 70°
∡L = 2х = 2*10° = 20°
∡P = 9х = 9*10° = 90°.