Using appropriate properties find (4/7*-4/9) -1/21 + (-4/9*3/7 )
Answers
Answered by
4
Step-by-step explanation:
4/7×-4/9-1/21+(-4/9×3/7)
=-16/63-1/21-12/63
=-336-63/1323-12/63
=-399/1323-12/63
=25137-15846/83384
=9291/83384
Answered by
3
Answer:
= 25/63
Step-by-step explanation:
we have [4/7 * -4/9] - 1/21 + [ -4/9 * 3/7 ]
using commutative
=[ 4/7 * - 4/9 ] + [ - 4/9 * 3/7 ] - 1/21
= - 4/9 * ( 4/7 + 3/7 ) - 1/21
= - 4/9 * 7/7 - 1/21
= LCM of 9,7,21 = 63
= 4/9 * 7/7 = 28/63; 7/7 * 9/9 = 63/63;1/21 * 3/3 = 3/63
= 28/63 * 63/63 - 3/63
= 28/63 * 1 - 3/63
= 28/63 - 3/63
= 25/63
I hope this will help you
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