find 2/5×-1/7+23/140-1/7×3/4
faster plss
Answers
Answered by
3
Answer:
(i)
10
27
×4=
10
108
=10.8
(ii) =
100
271
×5=
100
1355
=13.55
(iii)
10
25
×
10
3
=
100
75
=0.75
(iv) =
10
23
×
100
435
=
1000
10005
=10.005
(v)
100
23806
×
10
75
=1785.45
(vi)
100
79
×
10
324
=25.596
(vii) =
100
107
×
100
2
=
10000
214
=0.0214
(viii)
100
1005
×
100
105
=10.5525
Answered by
10
Answer:
0
Step-by-step explanation:
2/5*-1/7+23/140-1/7*3/4= 2/5*-1/7-1/7*3/4+23/140 (by the commutative law of addition )
=2/5×(-1/7)+(-1/7)×3/4+23/140
=-1/7(2/5+3/4)+23/140
=-1/7(8+15/20)+23/140. ( by the distributive law )
= -1/7(23/20)+23/140
= -23/140+ -23/140. ( by the additive inverse law )
= 0
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