Ecuaciones de primer grado.docx - Ecuaciones de primer grado a 3x 5 = 5x – 13 5 13 = 5x – 3x 18 = 2x X= 18 2 X= 9 b 5(7 – x = 31 – x 35 – 5x =

# Ecuaciones de primer grado.docx - Ecuaciones de primer...

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Ecuaciones de primer grado a) 3x + 5 = 5x – 13 5 + 13 = 5x – 3x 18 = 2x X= 18 / 2 X= 9 b) 5 (7 – x) = 31 – x 35 – 5x = 31 – x 35 – 31 = -x + 5x 4 = 4x X= -4 / 4 X = 1 c) 4 (2 – 3x) = -2x – 27 8 – 12x = - 2x – 27 8 + 27 = -2x + 12x 35 = 10x X = 35 / 10 X = 7/2 d) 6x – 8 = 4 (-2x + 5) #### You've reached the end of your free preview.

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Unformatted text preview: 6x – 8 = -8x + 20-8 – 20 = -8x + 6x-28 = - 2x X= -28 -2 X = -30 e) 3 ( 2x – 2) = 2 ( 3x + 9) 6x – 6 = 6x + 18-6 – 18 = 6x - 6x-24 = 0 0 = - 24 f) 3 (4x +7) = 4x – 25 12x + 21 = 4x – 25 12x -4x = -21 -25 8x = -46 X = 8 – 46 X= -38...
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• Spring '19
• william farfan

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