Question

Ada yang tau cara kedua soal itu?

Answer 1

× + y = 41 |×2|
2×+4y = 134 |×1| (dikurang)

2×+2y = 82
2×+4y = 134 (dikurang)

-2y = -52
y=-52:-2
y=26 (jumlah mobil)

×+y = 41
×+26= 41
×= 41-26
×=15 (jumlah motor)

1 motor = 750
1 mobil =750×2 = 1.500

26 mobil + 15 motor =
(26×1.500) + (15×750)
39.000 + 11.250
= Rp.50.250,-

300 cm = 30 dm
160 cm = 16 dm

×kuadrat = 30kuadrat + 16 kuadrat
×kuadrat =900 + 256
×kuadrat = 1156
×=akar 1156
×=34dm
ubah ke meter -> ÷10
34÷10 =3,4 meter