数学的四道计算题,要具体的计算过程,最好写下来,谢谢,急急急!!!
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-0.182+3.105-(0.318-6.065)
=-0.182+3.105-0.318+6.065
=-0.5+9.17
=8.67
-2.9+[1.7-(7+3.7-2.1)]
=-2.9+1.7-7-3.7+2.1
=-9.8
-1又1/2+2/3-【-1/3-(1/2-1/3)】
=-3/2+2/3+1/3+1/2-1/3
=-1+2/3
=-1/3
34.23-【194.6-(5.77-5.4)】
=34.23-194.6+5.77-5.4
=(34.23+5.77)-(194.6+5.4)
=40-200
=-160
=-0.182+3.105-0.318+6.065
=-0.5+9.17
=8.67
-2.9+[1.7-(7+3.7-2.1)]
=-2.9+1.7-7-3.7+2.1
=-9.8
-1又1/2+2/3-【-1/3-(1/2-1/3)】
=-3/2+2/3+1/3+1/2-1/3
=-1+2/3
=-1/3
34.23-【194.6-(5.77-5.4)】
=34.23-194.6+5.77-5.4
=(34.23+5.77)-(194.6+5.4)
=40-200
=-160
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