Pada jajargenjang PQRS panjang PQ = (3x -5 )cm dan panjang RS = ( x + 9 ) cm. Panjang sisi PQ sama dengan...
Jawaban:
PQ = RS
3x-5 = x+9
2x = 14
x = 14/2
x = 7
PQ = 3x-5 = 21-5 = 16 cm
RS = x+9 = 7+9 = 16 cm
- jawaban = 16 cm
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