Question

me ayudan con procedimiento

Answer 1

61)

x - 3x/4 = x/7 + 3
( 4x - 3x ) / 4 = ( x + 21 ) / 7
7 x = 4 ( x + 21 )
7x = 4x + 84
7x - 4x = 84
3x = 84
x = 84/3
x = 28          → Solución

64)

5x/6 - 3x/4 = x - 11
( 10x - 9x ) / 12 = x - 11
x = ( x -11 ) 12
x = 12x - 132
12x - x = 132
11x = 132
x = 132/11
x = 12       → Solución

66)

x - 10 = 5/9  ( x - 6 )
9 ( x - 10 ) = 5 ( x - 6 )
9x - 90 = 5x - 30
9x - 5x = - 30 + 90
4x = 60
x = 60/4
x = 15     → Solución