Question

São todas essas, mas as q eu mais preciso de ajuda é as da 34 ​

Answer 1

34

a)

$3x + 6 = 2x - 14 \\ 3x - 2x = - 14 - 6 \\ x = - 20$

b)

$3x + 3 + 2 = 5 + 2x - 2 \\ 3x - 2x + 5 = 3 \\ x = 3 - 5 \\ x = - 2$

c)

$2x - 2 + 3x + 3 = 4x + 8 \\ 2x + 3x - 2 + 3= 4x + 8 \\ 5x - 4x = 8 + 2 - 3 \\ x = 10 - 3 \\ x = 7$

d)

$10x + 5 + 3 = 7x + 21 - 11 \\ 10x + 8 = 7x + 10 \\ 10x - 7x = 10 - 8 \\ 3x = 2 \\ x = \frac{2}{3}$

e)

$11x +11 - 4 + 4x = 14x - 77 \\ 15x + 7 = 14x - 77 \\ 15x - 14x = - 77 - 7 \\ x = - 84$

f)

$26x - 39 - 10 + 5x = - 15 + 30x \\ 31x - 49 = - 15 + 30x \\ 31x - 30x = - 15 + 49 \\ x = 34$

g)

$4x + 14 + 9x - 15 = 12x + 15 - 1 \\ 13x - 1 = 12x + 14 \\ 13x - 12x = 14 + 1 \\ x = 15$

h)

$1 + 7x - 3 + 6x = 6 - 8x - 8x - 72 \\ 13x - 2 = - 16x - 66 \\ 13x + 16x = - 66 + 2 \\ 29x = - 64 \\ x = - \frac{64}{29}$