Question

x(20/21)+(20/21)2+(20/21)3=1261

Answer 1

x(20/21)+2*(20/21)+3(20/21)=1261

we know 2a+3a=5a

so, 20x/21+5*20/21=1261

=20x/21=1261-100/21

=20x/21=(1261*21-100)/21

=20x=26841-100

=x=26381/20

=x=1319.05

Thanks.

Answer 2

it will help u......☺️☺️☺️