On a
4x=3y
x+y=10 donc x=10-y
donc 4(10-y)=3y
40-4y=3y
7y=40
y=40/7
x+40/7 = 10
x=10-40/7
x=70/7-40/7 = 30/7
bonjour
pABCD=pDEF
4*x= 3*(10-x)
4x= 30-3x
4x+3x= 30
7x = 30/7
x≈ 4,28
(* veut dire multiplier)
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On a
4x=3y
x+y=10 donc x=10-y
donc 4(10-y)=3y
40-4y=3y
7y=40
y=40/7
x+40/7 = 10
x=10-40/7
x=70/7-40/7 = 30/7
bonjour
pABCD=pDEF
4*x= 3*(10-x)
4x= 30-3x
4x+3x= 30
7x = 30/7
x≈ 4,28
(* veut dire multiplier)