B= 0,5 .4/3 .(-10) .0,75 .7/-35
B= 1/2 .4/3 .(-10) .3/4 .(-1)/5
B= [1/2 .(-1)/5 .(-10) ] .(4/3 .3/4)
B= 1 .1
B= 1
B= 0,5 .4/3 .(-10) .0,75 .7/-35
B= 5/10 .4/3 .(-10) .75/100 .7/-35
B= 1/2 .4/3 .(-10) .3/4 .(-1)/5
B= [ 1/2 .(-10) .(-1)/5 ] .( 4/3 .3/4)
B= [1.(-10) .(-1)/ 2 .1 .5] .1
B= 1.1
B= 1
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