Using appropriate properties find:
(a)-2/3×5/7-2/9-10/7×2/3
(b)1/9×-4/5-7/9×3/14+2/9×-4/5
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Answer:
a)2/3(-5/7-10/7)-2/9
2/3(-15/7)-2/9
-10/7-2/9
(-90-14)/63
-104/63
b)-4/5(1/9+2/9)-1/6
-4/5(3/9)-1/6
-4/15-1/6
(-8-5)/30
-13/30.
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