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cari nilai x
3x-2 + x = 90
4x = 90+2
4x = 92
x = 92/4
x = 23
penyiku < AOC adalah < BOC , vesar < BOC = x = 23
jd penyiku < AOC = 23 (jawaban A)
no 2)
p + 29 + 44 + 85 = 180
p = 180 - (29+44+85)
p = 180 - 158
p = 22
4p = 22x4
4p = 88
jawaban C
no 3)
2x-5 + 5x + 10 = 180
7x = 180 -5
7x = 175
x = 175/7
x = 25
jawaban A