Wykonaj działania: a) (2a-3b)+(3a-4b)= b) (3x+6y)-(5x+4y)= c) 3*(4x+y-7)= z góry dziękuje
a) (2a-3b)+(3a-4b)=
=2a-3b+3a-4b=
=5a-7b
b) (3x+6y)-(5x+4y)=
=3x+6y-5x-4y=
=-2x+2y
c) 3*(4x+y-7)=
=12x+3y-21
licze na naj
a) (2a-3b)+(3a-4b)=2a-3b+3a-4b=5a-7b
b) (3x+6y)-(5x+4y)=3x+6y-5x-4y=-2x+2y
c) 3*(4x+y-7)=12x+3y-21
Proszę ;)
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a) (2a-3b)+(3a-4b)=
=2a-3b+3a-4b=
=5a-7b
b) (3x+6y)-(5x+4y)=
=3x+6y-5x-4y=
=-2x+2y
c) 3*(4x+y-7)=
=12x+3y-21
licze na naj
a) (2a-3b)+(3a-4b)=2a-3b+3a-4b=5a-7b
b) (3x+6y)-(5x+4y)=3x+6y-5x-4y=-2x+2y
c) 3*(4x+y-7)=12x+3y-21
Proszę ;)