257993
Description
Note by JL Cadenas, updated more than 1 year ago
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Created by JL Cadenas
over 10 years ago
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Copied to Note by JL Cadenas
over 10 years ago
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Page 1
ÁLGEBRA
2x – 3 = 5 2x = 5 + 3 x = 8 / 2 x = 4
3x – 1 = x + 9 3x – x = 9 + 1 2x = 10 x = 10 / 2 x = 5
5 – x = 2 5 – 2 = x 3 = x
\(\frac {3x-1}{5}\) = 4 3x – 1 = 4 * 5 3x = 20 + 1 x = 21 / 3 x = 7
\(\frac {3x}{2}\) + 4 = 7 3x + 4*2 = 7*2 . . . . . .\(\frac {3x}{2}\) = 7 – 4 3x = 14 — 8 . . . . . . . . 3x = 3 * 2 x = 6 / 3 . . . . . . . . . . . 3x = 6 x = 2 . . . . . . . . . . . . . . x = 6 / 3 = 2
\(\frac {2x–1}{3}\) +\(\frac {x}{2}\) = 9 2· (2x–1) + 3 · x = 9 · 6 4x – 2 + 3x = 54 7x = 54 + 2 x = 56 / 7 = 8
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