Jawaban:
[tex]x + 17 + x + 3 = 180 \\ 2x + 20 = 180 \\ 2x = 180 - 20 \\ x = \frac{160}{2} \\ x = 80 \\ \\ x + 3 + 2y - 3 = 180 \\ 80 + 3 + 2y - 3 = 180 \\ 2y = 180 - 80 \\ y = \frac{100}{2} \\ y = 50 \\ \\ x - y = 80 - 50 = 30[/tex]
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Jawaban:
[tex]x + 17 + x + 3 = 180 \\ 2x + 20 = 180 \\ 2x = 180 - 20 \\ x = \frac{160}{2} \\ x = 80 \\ \\ x + 3 + 2y - 3 = 180 \\ 80 + 3 + 2y - 3 = 180 \\ 2y = 180 - 80 \\ y = \frac{100}{2} \\ y = 50 \\ \\ x - y = 80 - 50 = 30[/tex]