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1、-15+6÷(-3)×1/2 2、(1/4-1/2+1/6)×24 3、|-5/14|×(-3/7)2÷3/14 4、2/3+(-1/5)-1+1/3 5、23+(-73)6、(-84)+(-49)7、7+(-2.04)8、4.23+(-7.57)9、(-7/3)+(-7/6)10、-1+2-3+4-5+6-7;11、-1+8-…
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