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hola :3
1- (3x + 4y-3 ) + (-2x +2y +3)
[tex](3x+4y-3)+(-2x+2y+3)[/tex]
[tex]=3x+4y-3-2x+2y+3[/tex]
[tex]=3x-2x+4y+2y-3+3[/tex]
[tex]x+4y+2y-3+3[/tex]
[tex]=x+6y-3+3[/tex]
[tex]=x+6y[/tex]
2- (a-b+c) + (-a+b-c)
[tex](a-b+c)+(-a+b-c)[/tex]
[tex]=a-b+c-a+b-c[/tex]
[tex]a-a-b+b+c-c[/tex]
[tex]=-b+b+c-c[/tex]
[tex]=c-c[/tex]
[tex]=0[/tex]
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Verified answer
hola :3
1- (3x + 4y-3 ) + (-2x +2y +3)
[tex](3x+4y-3)+(-2x+2y+3)[/tex]
[tex]=3x+4y-3-2x+2y+3[/tex]
[tex]=3x-2x+4y+2y-3+3[/tex]
[tex]x+4y+2y-3+3[/tex]
[tex]=x+6y-3+3[/tex]
[tex]=x+6y[/tex]
2- (a-b+c) + (-a+b-c)
[tex](a-b+c)+(-a+b-c)[/tex]
[tex]=a-b+c-a+b-c[/tex]
[tex]a-a-b+b+c-c[/tex]
[tex]=-b+b+c-c[/tex]
[tex]=c-c[/tex]
[tex]=0[/tex]
saludos
att :sam