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Cursos Gerais ·

Matemática 1

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Ejercicio escolarito\n\nD. 49\n19 x 2 : 34 + 15 = 49\n\n15\n34 : 17\nLazo mínimo es 17\n\n2) 4x - 8x + 36\n4x + 8x = 36\n12x = 36\nx = 36 : 12\nx = 3\n\n3) 5(1 - r) . 2x + 1 = 3(2 + x)\n5 - 5x - 3x = - 6 - 3x\n6 - 7x = - 6 - 6x\n-7x + 3x = - 6 - 6\n-4x = - 12 ( = 1)\nx = - 12 : 3\n4\n\n4) -5x - 5y = 50\n-5x - (140 - 20x) = 50\n(20x + 5y = 140)\n\n5x - 5y = 50\n5y = 140 - 20x\n5y = 140 - 20 : 38/3\n5y = 140 - 20 . 38/3\n5y = 140 - 760 / 3\n5y = - 340 : 5\ny = - 68 : 3\n\n5) (m + 5)x + 3m = 3( x - 2)m x + 5x + 3m = 3x - 6 11)x + 3m = 3x - 6 - 5x\nm - 1 + 3m = 3( 1) - 6 - 5( 1) - m + 3m = - 3 - 6 + 5 - m + 3 =\n-9 + 52m = - 4/m = - 2m = - 2