Question

Determine o valor de x.

a. 1 - x - 3/8 = 5/24
b. 3 1/2 - 1 1/3 . x = 1
c. 2 . (1 1/2 - x) = 2 1/3 + 1/15

Answer 1

Explicação passo-a-passo:

a)

5x+7=-2x-14

5x+2x=-14-7

7x=-21

x = -3

b)

x/5+2=3x-26

x/5-3x=-26-2

-14x/5=-28

-14x=-28*5

x=140/14

x = 10

c)

2x/3-3=5x/4

2x/3-5x/4=3

-7x/12=3

-7x=12*3

-7x=36

x = -36/7

d)

-3/5 + 5x/4= 2x +1/2

5x/4-2x=1/2+3/5

-3x/4=11/10

-3x=11/10*4

x=-44/10/3

x=-44/10 * 1/3

x = -22/15