问题描述:
判断下列变形是否正确?为什么?如果错误应该怎样改正?
(1) -3+4-3=-3+3-4 ( )___________
(2) -3+4-3=-4+3-3 ( )___________
(3) -6/7+1.5-1/7=1.5+6/7-1/7 ( )___________
(4) -6/7+1.5-1/7=1.5(-6/7-1/7) ( )___________
(5) -6/7+1.5-1/7=1.5(1/7-1/7) ( )___________
(6) -6/7+1.5-1/7=1.5+(-6/7-1/7)( )___________
(1) -3+4-3=-3+3-4 ( )___________
(2) -3+4-3=-4+3-3 ( )___________
(3) -6/7+1.5-1/7=1.5+6/7-1/7 ( )___________
(4) -6/7+1.5-1/7=1.5(-6/7-1/7) ( )___________
(5) -6/7+1.5-1/7=1.5(1/7-1/7) ( )___________
(6) -6/7+1.5-1/7=1.5+(-6/7-1/7)( )___________
问题解答:
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