Question

Which properties can be used in computing 2÷7 x(7x6÷5)+1÷3 x(3x 7÷10)​

Answer 1

Answer:

Associative Property

Multiplicative Inverse

Closure Property

2/5 (5*7/6)+1/3*(3*4/11) = (2/5*5)*7/6+(1/3*3)*4/11

[associative property. a (b*c)=(a*b)*c]

=[(2*1)*7/6]+[(1*1)*4/11]

[Multiplicative Indenty. a*1=a=1*a]

=(2*7/6)+(1*4/11)

=(1*7/3)+(1*4/11)

= 7/3+4/11

[closure property. a+b]

=(11*7)+(3*4)/33

=77+12/33

=89/33

=2+22/33 (mixed fraction}

Answer 2

Answer:

Multiplicative Inverse

Closure Property

2/5 (5*7/6)+1/3 (3*4/11) = (2/5*5) 7/6+(1/3*3)*4/11

[associative property. a (b*c)=(a*b)*c]

=[(2+1) 7/6]+[(1 1)*4/11]

[Multiplicative Indenty. a*1=a=1*a]

=(2*7/6)+(1*4/11)

=(1*7/3)+(1*4/11)

= 7/3+4/11

[closure property. a+b]

=(11*7)+(3*4)/33

= 77+12/33

=89/33

=2+22/33 (mixed fraction]