Jawabanmu

2014-09-10T21:37:37+07:00
A) A+B
= (3x+5x)+(4x-2y)
= 3x + 5y + 4x - 2y
= 3x + 4x + 5y -2y
= 7x + 3y

b) A-B
= (3x+5y)-(4x-2y)
= 3x + 5y - 4x + 2y
= 3x - 4x + 5y + 2y
= -x + 7y
1 5 1
c) 2A + B = 2(3x + 5y) + ( 4x - 2y ) = 6x + 10y + 4x -2y = 6x + 4x +10y - 2y = 10x + 8y
e) 4A + 3B = 4( 3x + 5y ) + 3( 4x - 2y ) = 12x + 20y + 12x - 6y = 12x + 12x + 20y - 6y = 24x + 14y
yg lain saya juga agak bingung
ohh gpp deh, terima kasih ^^
sama sama