1.- 5 ( r ) + 69 = - 5 ( - 2r + 2 )
5r + 69 = 10t - 10
5r - 10r = - 10 - 69
- 5r = - 79
r = - 79 / - 5
r = 79 / 5
COMPROBACION =
5 ( r ) + 69 = - 5 ( - 2r + 2 )
5 ( 79/5 ) + 69 = - 5 ( - 2 [ 79/5 ] + 2 )
79 + 69 = - 5 ( - 158/5 + 2 )
148 = 158 - 10
148 = 148
2.- 9 ( z - 6 ) = 3 ( z - 2 )
( 9z - 54 ) = ( 3z - 6 )
( 9z - 3z ) = ( 54 - 6 )
( 6z ) = ( 48 )
z = ( 48 / 6 )
z = 8
COMPROBACION
9 ( z - 6 ) = 3 ( z - 2 )
9 ( [ 8 ] - 6 = 3 ( [ 8 ] - 2 )
9 ( 2 ) = 3 ( 6 )
18 = 18
3.- 7 ( x - 15 ) = 3 ( x - 14 )
( 7x - 105 ) = ( 3x - 42 )
( 7x - 3x ) = ( 105 - 42 )
( 4x ) = ( 63 )
x = ( 63 / 4 )
x = 63/4
COMPROBACION =
7 ( x - 15 ) = 3 ( x - 14 )
7 ( [ 63/4 ] - 15 ) = 3 ( [ 63/4 ] - 14 )
7 ( [ 63/4 - 15 ( 4 ) ] ) = 3 ( [ 63/4 - 14 ( 4 ) ] )
7 ( [ 63/4 - 60/4 ] ) = 3 ( [ 63/4 - 56/4 ] )
7 ( [ 3/4 ] ) = 3 ( [ 7/4 ] )
21/4 = 21/4
Saludosssssssss!!!!!!!!......
