A= x-9-x+7-11+x
= x-13
B = 3x-1-2x-2-x+3
= 0
A=(x+9)-(x-7)-(11-x)
A=x+9-x+7-11+x
A=(x-x+x)+(9+7-11)
A=x+5
B=(3x-1)-(2x+2)-(x-3)
B=3x-1-2x-2-x+3
B=(3x-2x-x)-(1-2+3)=2
A=(x + 9 ) - ( x - 7 ) - ( 11 - x )
= x + 9 - x + 7 - 11 + x
= ( x - x + x ) + ( 9 + 7 - 11 )
=x + 5
B = ( 3x -1 ) - ( 2x + 2 ) -( x - 3 )
= 3x - 1 - 2x - 2 -x + 3
=(3x - 2x - x ) - ( 1 - 2 + 3 ) = 2