tolong bantu saya mengerjakan soal ini ya, beserta caranya Terima kasih

1.
a). 180 = x + 6x + 2x
180 = 9x
9x = 180
x = 180 : 9
x = 20
Jadi, x = 20

b). 180 = 90 + 3x + 2x
180 - 90 = 3x + 2x
90 = 5x
5x = 90
x = 90 : 5
x = 18
Jadi, x = 18

c). 180 = 2x + 3x + 4x
180 = 9x
9x = 180
x = 180 : 9
x = 20
Jadi, x = 20

d). 180 = 2x + 3x + x
180 = 6x
6x = 180
x = 180 : 6
x = 30
Jadi, x = 30

~semoga benar~

maaf ya kalau salah