Question

determine o valor de x de modo a obter as razões inversas em cada item.
a) 3 x
_ e _
8 3

b)2 e 5
_ _
x+1 2

Answer 1

a)
3........X
_ = __
8........3

8x = 3(3)

8x = 9

x = 9
......__
.......8

b)
...2..... . . 5
____ = ___
.x + 1.........2

( x+ 1 ).5 = 2(2)

5x + 5 = 4

5x = 4 - 5

5x = - 1

x = - 1
.......___
..........5