Question

3/4 + 7/2 - 3/8 =

3/5 - 7/10 + 3/8 - 3=

2/9 - 4/15 + 2 =

Answer 1

Respuesta:

3/4 + 7/2 - 3/8 =

=3+(7⋅2)2⋅2−38=

=174−38=

=(17⋅2)−34⋅2=

=31 ⁄ 8

3/5 - 7/10 + 3/8 - 3=

=(3⋅2)−75⋅2+38−3=  

=−110+38−3=

=(−1⋅4)+(3⋅5)5⋅(2⋅4)−3=

=1140−3=

=11−(3⋅40)40=

=−109⁄40

2/9 - 4/15 + 2 =

=(2⋅5)−(4⋅3)3⋅(3⋅5)+2=

=−245+2=

=(−2)+(2⋅45)45=

=88 ⁄ 45