Question

encontre as raizes da equaçao
b- 3(2x-1)=-2(x+3)
c- 5x-3(x+2) = 15
d- 2x+3x+9= 8(6-x)

Answer 1

b)

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

3.2x - 1.3 = -2.x - 2.3

6x - 3 = -2x - 6

6x + 2x = -6 + 3

8x = -3

x = -3/8

c)

5x - 3(x + 2) = 15

5x - 3x - 6 = 15

2x = 15 + 6

2x = 21

x = 21/2

d)

2x + 3x + 9 = 8(6 -x)

5x + 9 = 48 - 8x

5x + 8x = 48 - 9

13x = 39

x = 39/13

x = 3