-2/5 - -3/10 - -4/7 Simplify the following..
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-2/5-(-3/10)-(-4/7)
-2/5+3/10+4/7
(-2/5)×2+3/10+4/7
-4/10+3/10+4/7
(-4+3)/10+4/7
-1/10+4/7
(-1/10)×7+(4/7)×10
-7/70+40/70
(-7+40)/70
33/70
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