Jawaban:
1. 2x + x = 90
3x = 90
x = 30
2. 2a + 3a + a = 180
6a = 180
a = 30
3. 4p + 2p + 90° = 180
6p = 180-90
6p = 90
p = 15
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Jawaban:
1. 2x + x = 90
3x = 90
x = 30
2. 2a + 3a + a = 180
6a = 180
a = 30
3. 4p + 2p + 90° = 180
6p = 180-90
6p = 90
p = 15