Question

a, 7/15 + 8/15 + 9/16 +7/16=

b, 4/7 * 5/6 + 4/7 * 1/6

 

Answer 1

a) ^{_{\(\dfrac{7}{15}+\dfrac{8}{15}+\dfrac{9}{16}+\dfrac{7}{16}\)}}

^{_{\(=\left(\dfrac{7}{15}+\dfrac{8}{15}\right)+\left(\dfrac{9}{16}+\dfrac{7}{16}\right)\)}}

^_\(=1+1\)

^_\(=2\)

b) ^{_{\(\dfrac{4}{7}\times\dfrac{5}{6}+\dfrac{4}{7}\times\dfrac{1}{6}\)}}

^{_{\(=\dfrac{4}{7}\times\left(\dfrac{5}{6}+\dfrac{1}{6}\right)\)}}

^{_{\(=\dfrac{4}{7}\times1\)}}

^{_{\(=\dfrac{4}{7}\)}}

Answer 2

(7/15 + 8 / 15 ) + ( 9/16 +7/16)

1 + 1

2

4/7 . ( 5/6+1/6)

4/7 . 1

4/7

Answer 3

a) \(=1+1=2\)

b) \(=\dfrac{4}{7}\left(\dfrac{5}{6}+\dfrac{1}{6}\right)=\dfrac{4}{7}\)

Answer 4

a) 2

b) 4/7

Answer 5

a)\(\left(\dfrac{7}{15}+\dfrac{8}{15}\right)+\left(\dfrac{9}{16}+\dfrac{7}{16}\right)\)

=1+1

=2

b)\(\dfrac{4}{7}.\left(\dfrac{5}{6}+\dfrac{1}{6}\right)\)

=4/7.1

=4/7

Answer 6

\(=\dfrac{15}{15}+\dfrac{16}{16}=1+1=2\)

\(=\dfrac{4}{7}.\left(\dfrac{5}{6}+\dfrac{1}{6}\right)=\dfrac{4}{7}\)

Answer 7

a, = 1 + 1 = 2

b, = 4/7 * ( 5/6 + 1/6) 

= 4/7 * 1

= 4/7

Answer 8

(7/15 + 8/15) + ( 9/16 + 7/16)

1 + 1

2

4/7 : (5/6 + 1/6)

4/7:1

4/7