Réponses

2014-05-08T22:39:43+02:00
40x-9/11+x-0,1/0,35 = 4,8x+7/5+2x-0,5/2
40x  +x -4.8x -2x  = 9/11 + 0.1 /0.35 +7.5 +0.5/2
41x -6.8x =  9/11 +10/35 +75/10 +5/20
34.2x =  9*140 + 10*44 + 75*154+5*77  / 1540
342/10x = 1260+440+11550+385 /1540
342/10x  =  13635 /1540
x = 13635/1540  x 10/342
x = 136 350 / 1540*342
x =136 350 /526680
x = 13635 / 52668
Pas vraiment compris comment ta procéder !