BANTU PLEASS ;) TENTANG JAJAR GENJANG BESOK DI KUMPULIN
[tex] < a + < b = 180 \\ 4x + 5x = 180 \\ 9x = 180 \\ x = \frac{180}{9} \\ x = 20 \\ \\ < d = < b \\ 2y = 5x \\ 2y = 5.20 \\ 2y = 100 \\ y = \frac{100}{2} \\ y = 50 [/tex]
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