Nilai y adalah... A. 122° B. 125° C. 132° D. 165°

180 = 8x-12
8x = 168
x = 21

y = 5(21) +21 = 126

hth, jawaban terbaiknya yaa

SUDUT

5x + 21 + 3x - 9 = 180° (dlm sepihak)
8x + 12 = 180°
8x = 180° - 12
8x = 168°
x = 168°/8
x = 21°

y = 5x + 21 (dalam bersebrangan)
y = 5×(21) + 21
y = 105° + 21
y = 126°


smg mmbantu