Question

ALGUÉM PELO AMOR DE DEUS



Reduza os termos semelhantes das expressões algébricas
a) 2x + ( 2x + y) – (3x – y) + 9x =

b) 5a – { 5a – [ 5a – (5a – m) – m] – m } – m =

c) – { 7a – m – [ 4m – (n – m + 3a) – 4a] + n } =

d) 5xy – [ - (2xy + 5x) + [ 3Y – (-XY + X + 3XY)]} =

e) – {x – 2y + y – [ 3x + 5xy + 6y – (x –y) + 8 ]} =
​

Answer 1

Olá!!!!

a) 2x + ( 2x + y) – (3x – y) + 9x =

=(4x+y)−(3x−y)+9x=  

=(x+2y)+9x=

=10x+2y

b) 5a – { 5a – [ 5a – (5a – m) – m] – m } – m =

=5a−{5a−[m−m]−m}−m=  

=5a−{5a−[0]−m}−m=

=5a−{5a−m}−m=

=m−m=

=0

c) – { 7a – m – [ 4m – (n – m + 3a) – 4a] + n } =

=−{(7a−m)−[4m−(3a−m+n)−4a]+n}=

=−{(7a−m)−[(−3a+5m−n)−4a]+n}=

=−{(7a−m)−[−7a+5m−n]+n}=

=−{(14a−6m+n)+n}=

=−14a+6m−2n

d) 5xy – [ - (2xy + 5x) + [ 3Y – (-XY + X + 3XY)]} =

=5xy−[(−2xy−5x)+[−2xy−x+3y]}=  

=5xy−[−4xy−6x+3y}=

=9xy+6x−3y

e) – {x – 2y + y – [ 3x + 5xy + 6y – (x –y) + 8 ]} =

=−{(x−2y)+y−[(5xy+3x)+6y−(x−y)+8]}=  

=−{(x−y)−[(5xy+3x+6y)−(x−y)+8]}=

=−{(x−y)−[5xy+2x+7y+8]}=

=5xy+x+8y+8

Espero ter te ajudado!!!