Question

Simplifique as expressões algébricas:
a- (-2x) +3x-9-x)=
b- 7a +3a- 1a-5 a=
c- (-2y)+(-4y)+ (-2y)
d- y+(-3y)+4y -2y=

Answer 1

a) (-2x)+3x-9-x )
-2x +3x-9-x
0-9
= -9

b ) 7a+3a-1a-5a
(7+3-1-5)a
= 4a

c) (-2y)+(-4y)+(-2y)
-2y-4y-2y
= -8y

d) y+(-3y)+4y-2y
y-3y+4y-2y
= 0