Question

solve 0.6 bar + 0.7 bar + 0.47 bar

Answer 1

let x be 0.66
multiply 10 on both sides.
10*x=0.66*10
10x=6.6
10x=6+0.6
10x=6+x
10x-x=6
9x=6
x=6/9
x=2/3

let x be 0.77
multiply 10 on both the side.
10*x=0.77*10
10x=7.7
10x=7+0.7
10x=7+x
10x-x=7
9x=7
x=7/9

let x be 0.4747
multiply 100 on both the side
100*x=0.4747*100
100x=47.47
100x=47+0.47
100x =47+x
100x-x=47
99x=47
x=47/99

2/3+7/9+47/99
lcm=99
66+77+47/99
190/99