Penjelasan dengan langkah-langkah:
2x + 10 = 3x - 20
10 + 20 = 3x - 2x
30 = x
Panjang diagonal = 2x + 10
= 2. 30 + 10
= 60 + 10
= 70 cm
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Penjelasan dengan langkah-langkah:
2x + 10 = 3x - 20
10 + 20 = 3x - 2x
30 = x
Panjang diagonal = 2x + 10
= 2. 30 + 10
= 60 + 10
= 70 cm