bonjour
verres = x
assiettes = x + 4.5
8 ( x + 4 .5 x ) = 6 x + 61
8 x + 36 = 6 x + 61
8 x - 6 x = 61 - 36
2 x = 25
x = 12.50
verre = 12 .50 donc 6 = 75
assiettes = 17 donc 8 = 136 soit 61 € de plus
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bonjour
verres = x
assiettes = x + 4.5
8 ( x + 4 .5 x ) = 6 x + 61
8 x + 36 = 6 x + 61
8 x - 6 x = 61 - 36
2 x = 25
x = 12.50
verre = 12 .50 donc 6 = 75
assiettes = 17 donc 8 = 136 soit 61 € de plus