`a ) 435 - ( x + 16 ) = 425 : 17`
`435 - ( x + 16 ) = 25`
`x + 16 = 435 - 25`
`x + 16 = 410`
`x = 410 - 16`
`x = 394`
Vậy `x = 394`
`b ) ( x + 4/3 ) × 7/4 = 5 - 7/6`
`( x + 4/3 ) × 7/4 = 23/6`
`x + 4/3 = 23/6 : 7/4`
`x + 4/3 = 46/21`
`x = 46/21 - 4/3`
`x = 18/21 = 6/7`
Vậy `x = 6/7`
`#dtkc`