Question

me ayudan con las ecuaciones lineales a)3/2 - 2/2 + 2x=-1/2 + 4x b) 100x-30x+200=20x-10x c) 3x-2+4x-5=2x+3x-10 d) 1/2+ 2/3 +2x= 3/2x -4/3x+5

Answer 1

a)3/2 - 2/2 + 2x=-1/2 + 4x ⇒ (*2
3 - 2 +4x = -1 + 8x
3-2+1 = 8x-4x
2 = 4x
x = 2/4 = 1/2

b) 100x-30x+200=20x-10x
100x - 30x -20x + 10x = -200
60x = -200
x = -200/60 = -3,3

c) 3x-2+4x-5=2x+3x-10
3x +4x -2x - 3x = -10 -5
2x = -15
x = -15/2 = -7,5

d) 1/2+ 2/3 +2x= 3/2x -4/3x+5
3/6 + 4/6 + 12x/6 = 9/6x - 8/6 + 30/6
7/6 + 12x/6 = 9/6x + 22/6
7 +12x = 9/x +22
12x-9x = 22-7
3x = 15
x = 15/3 =5



                                      ................Kd