Respuesta:
a. 5a + 3
b. 3b + 10
c. - 9x - 10
d. 8x + 7y
e. 2y - 3x
f. - 20a - 12ab
Explicación paso a paso:
a.
( 2a - 8 ) + ( 3a + 11 )
= 2a - 8 + 3a + 11
= 2a + 3a + 11 - 8
= 5a + 3
b.
( 4b + 4 ) + ( 6 - b )
= 4b + 4 + 6 - b
= 4b - b + 4 + 6
= 3b + 10
c.
( - x - 3 ) + ( - 8x - 7 )
= - x - 3 - 8x - 7
= - x - 8x - 7 - 3
= - 9x - 10
d.
( 9x + 3y ) + ( 4y - x )
= 9x + 3y + 4y - x
= 9x - x + 3y + 4y
= 8x + 7y
e.
( 7y - 6x ) + ( - 5y + 2x )
= 7y - 6x - 5y + 3x
= 7y - 5y + 3x - 6x
= 2y - 3x
f.
( - 9ab - 11a ) + ( - 9a - 3ab )
= - 9ab - 11a - 9a - 3ab
= - 11a - 9a - 9ab - 3ab
= - 20a - 12ab
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Respuesta:
a. 5a + 3
b. 3b + 10
c. - 9x - 10
d. 8x + 7y
e. 2y - 3x
f. - 20a - 12ab
Explicación paso a paso:
a.
( 2a - 8 ) + ( 3a + 11 )
= 2a - 8 + 3a + 11
= 2a + 3a + 11 - 8
= 5a + 3
b.
( 4b + 4 ) + ( 6 - b )
= 4b + 4 + 6 - b
= 4b - b + 4 + 6
= 3b + 10
c.
( - x - 3 ) + ( - 8x - 7 )
= - x - 3 - 8x - 7
= - x - 8x - 7 - 3
= - 9x - 10
d.
( 9x + 3y ) + ( 4y - x )
= 9x + 3y + 4y - x
= 9x - x + 3y + 4y
= 8x + 7y
e.
( 7y - 6x ) + ( - 5y + 2x )
= 7y - 6x - 5y + 3x
= 7y - 5y + 3x - 6x
= 2y - 3x
f.
( - 9ab - 11a ) + ( - 9a - 3ab )
= - 9ab - 11a - 9a - 3ab
= - 11a - 9a - 9ab - 3ab
= - 20a - 12ab