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b.) A - B = ( 2x + y ) - ( x - 3y + 2 ) = x + 4y - 2
c.) B - A = ( x - 3y + 2 ) - ( 2x + y ) = -x - 4y + 2
d.) 3A - 2B = 3( 2x + y ) - 2 ( x - 3y + 2 )
= 6x + 3y - 2x + 6y - 4 = 4x + 9y - 4
e.) 3B - A = 3( x - 3y + 2 ) - ( 2x + y )
= 3x - 9y + 6 - 2x - y = x - 10y + 6