Question

Necesito resolver estas 5 primeras ecuaciones, ayuda por favoor!

Answer 1

Resposta:

1)

x + 3(x-1) = 6 -4(2x +3)

x + 3x -3 = 6 - 8x - 12

4x + 8x = -6 + 3

12x = -3

x = -3/12 = -1/4

2)

5(x -1) +16(2x - 3) = 3(2x - 7) - x

5x - 5 + 32x - 48 = 6x - 21 -x

37x - 5x = -21 + 52

32x = 31

x = 31/32

3)

2(3x +3) - 4(5x -3) = x(x-3) -x(x + 5)

6x + 6 - 20x + 12 = x^2 - 3x -x^2 +5x

-14x - 2x = -18

-16x = -18 (-1)

16x=18

x = 18/16 = 9/8

4)

184 -7(2x +5) = 301 +6(x-1) -6

184 - 14x -35 = 301 + 6x -6 -6

-14x - 6x = 289 -149

-20x = 140 (-1)

20x = 140

x = 20/140 = 1/7

5)

7(18 -x) -6(3 - 5x) = -(7x +9) - 3(2x +5) -12

126 - 7x -18 +30x = -7x -9 -6x -15 -12

23x +13x = 36 -108

36x = -72

x = -72/36 = -2