perhatikan gambar berikut Nilai y = ..? a. 90° b. 97° c. 100° d. 108°

5x + 3 = 3x + 35
5x - 3x = 35 - 3
2x = 32
x = 32/2
x = 16
(3x + 35)= 3 X 16 + 35 = 48 + 35 = 83
(5x + 3) = 5 X 16 +3 = 80 + 3 = 83
= 180 - 83 = 97 (b)