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9x - 4 = 23
9x = 23 + 4
x = 27
9
x = 3
* (3x + 1) = (3.3 + 1)
= 10cm
* (4x - 3) = (4.3 - 3)
= 9cm
* (2x - 2) = (2.3 - 2)
= 4cm
jadi sisi terpanjang adalah (3x +1)
senang bisa membantumu kawan
S¹= 3x+1
S²=4x-3
S³=2(x-1)
K=23 cm
ditanya sisi terpanjang =...?
Di jawab :
K = s¹+s²+s³
23 = 3x+1+4x-3+2(x-1)
=3x+1+4x-3+2x-2
= 3x+4x+2x+1-3-2
= 9x-4
23+4=9x
27 =9x
x = 27:9
=3
Maka :
S¹= 3x+1
=3.3+1
=10 cm
S² = 4x-3
= 4.3-3
=9 cm
S³ = 2(x-1)
=2x-2
= 2.3-2
=4 cm
jadi, panjang sisi terpanjang adalah S¹ =3x+1
=3.3+1 =10 cm