Question

5. Simplifique as expressões algébricas:
a) 7x-(-2x + x) + (-3x +5x)
b) 2xy +(-5xy + 2xy - xy + 4xy - 2xy - 8xy)
Me ajudem pfvr

Answer 1

Resposta:

a) 10x

b)-8xy

Espero ter ajudado!

Answer 2

a) 7x - ( -2x + x ) + ( -3x + 5x )

7x - ( -x ) + 2x

7x + x + 2x =

= 10x

b) 2xy + ( -5xy + 2xy - xy + 4xy - 2xy - 8xy)

2xy + ( -5xy - xy - 2xy -8xy + 2xy + 4xy )

2xy + ( -16xy + 6xy)

2xy + ( -10xy)

2xy - 10xy =

= -8xy