数学题一题.(-5)÷(-0.2)×(-2/7)+丨-1/7丨数学题(-5)÷(-0.2)×(-2/7)+丨-1/7丨
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数学题一题.(-5)÷(-0.2)×(-2/7)+丨-1/7丨数学题(-5)÷(-0.2)×(-2/7)+丨-1/7丨
数学题一题.(-5)÷(-0.2)×(-2/7)+丨-1/7丨
数学题(-5)÷(-0.2)×(-2/7)+丨-1/7丨
数学题一题.(-5)÷(-0.2)×(-2/7)+丨-1/7丨数学题(-5)÷(-0.2)×(-2/7)+丨-1/7丨
(-5)÷(-0.2)×(-2/7)+丨-1/7丨
原式=5/2×(-2/7)+1/7
=-5/7+1/7
=4/7
希望可以帮到你.
=-50/7+1、/7=-7
、
明显是-7
-5/(-0.2)=25
25*(-2/7)=-50/7
-50/7+1/7=-49/7=7
先把符号确定为负,再计算,就简单了,7分之51
答案等于-7