Doprowadź do najprostszej postaci wyrażenia algebraiczne :
a) 3x+5y-6x=
b) (6x-8y)+(4x-9y)=
c) (12x+7y)-(16y-4x)=
d)4(2x-3y)-(5x+9y)=
e)4,5(3x-8y)-2,5(5x+4y)=
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a) 3x+5y-6x= -3x +5y
b) (6x-8y)+(4x-9y)= 6x-8y+4x-9y = 10x -17y
c) (12x+7y)-(16y-4x)= 12x+7y-16y+4x = 16x - 9y
d) 4(2x-3y)-(5x+9y)= 8x-12y-5x-9y = 3x - 21y
e)4,5(3x-8y)-2,5(5x+4y)= 13,5x - 36y - 12,5x - 10y = x - 46y