Matematica

I
(a) 5j - 9 = 3j + 5
(c) 3ñ - 15 + 2ñ - 14 = ñ – 11
(e) 12y = 3(3y - 5)
(g) (t - 3)² - (t - 2)² = 5

(b) 5s +(4 - s) = 9 - (s - 6)
(d) 3 - (8v-5) + (6-7v) - 1 = 7 - (v-1) + (4v+ 4)
(f) 2 - {k - [6k - (1 - 2k)]} = 100
(h) (3x- 3)² - (2x - 7) = (3x - 5)(3x + 5 )

(i) (x - 7)² - (1 + x)² = 2(3x - 4)

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3http://www.sectormatematica.cl/media/NM1/NM1_verbal es_ec_primer_gr ado.doc
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