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2 . (p + l ) = k
2(4x+3 + 2x - 2) = k
2(6x + 1) = k
12x + 2 = k
b)
12x + 2 = 62
12x = 62-2
12x = 60
x = 60/12
x = 5
c)
panjang = 4x + 3
= 4(5) + 3
= 20 + 3
= 23 cm
lebar = 2x - 2
= 2(5) - 2
= 10 - 2
= 8 cm