Bonjour,
(1/4)x+(2/5)x+616=x
x-(1/4)x-(2/5)x=616
x-(5/20)x-(8/20)x=616
(7/20)x=616
x=616×20/7
x=1760
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Bonjour,
(1/4)x+(2/5)x+616=x
x-(1/4)x-(2/5)x=616
x-(5/20)x-(8/20)x=616
(7/20)x=616
x=616×20/7
x=1760