18. Evaluate using appropriate properties: a) 2/5 X -7/10 - 4/5 - 7/10 X 3/10
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Answer:
-1.29
Step-by-step explanation:
2/5×-7/10-4/5-7/10×3/10
= -14/50-4/5-21/100
= (-28-80-21)/100
= -129/100
= -1.29
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