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﹣(2x+y)=﹣2x+y 2(x﹣y)=2x﹣y
3x﹣(2y+z)=3x﹣2y﹣z x﹣(﹣y+z)=x﹣y﹣z
x﹣(y﹣z) x﹣(﹣y+z) x﹣(y+z) x﹣(﹣y﹣z)
﹣x+y﹣z ﹣x﹣y+z ﹣x﹣y﹣z ﹣x+y+z
﹣(a+b)=﹣a+b 2(a﹣b)=2a﹣b
x﹣(2y+z)=x﹣2y﹣z x﹣(﹣y+z)=x﹣y﹣z
x﹣2y﹣z x﹣2y﹣2z x﹣2y+2z x+2y﹣2z
y2-(6x-y+3z)=y2-6x-y+3z 9y2-[x-(5z+4)]=9y2-x+5z+4 x+[-6y+(5z-1)]=x-6y-5z+1 -(7x+y)+(z+4)=-7x-y-z-4
x-(-y-z)=x+y-z x-(y+z)=x-y+z x+(y-z)=x+y-z x-(-y+z)=x-y-z
a+(b﹣c)=a+b﹣c a﹣(b+c﹣d)=a﹣b﹣c﹣d m+2(p﹣q)=m+2p﹣2q x﹣3(y+z)=x﹣3y﹣3z
m+2(a﹣b)=m+2a﹣b 3x﹣2(4y﹣1)=3x﹣8y﹣2
(a﹣b)﹣(c﹣d)=a﹣b﹣c+d ﹣5(x﹣y﹣z)=﹣5x+5y﹣5z
﹣(2x+y)=﹣2x+y 2(x﹣y)=2x﹣y 3x﹣(2y+z)=3x﹣2y﹣z x﹣(﹣y+z)=x﹣y﹣z
-x+y-z -x-y+z -x-y-z -x+y+z
﹣x+y﹣z ﹣x﹣y+z ﹣x﹣y﹣z ﹣x+y+z
(a+2b)=a+2b ﹣(x﹣y+z)=﹣x+y﹣z
2(3m﹣n)=6m﹣2n ﹣(a﹣b)=﹣a﹣b
-2X—Y.—Y+3 —2X+3 2X+3 -2X—2Y+3
—(a+b)=—a+b 2(a—b)=2a—b x—(2y+z)=x—2y—z x—(—y+z)=x—y—z