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sosomche
@sosomche
January 2021
1
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SVVP C URGENT JARRIVE PAS CET EXERCICE !!!!! AIDEZ-MOI !!
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trudelmichel
Verified answer
Bonjour,
1) 2(4x-5)=4+x
8x-10=4+x
8x-x=4+10
7x=14
x=14/7
x=2
2(x+8)+3=4-3x
2x+16+3=4-3x
2x+19=4-3x
2x+3x=4-19
5x=-15
x=-15/5
x=-3
12x-1=2(5x-2)+1
12x-1=10x-4+1
12x-10x=-3+1
2x=-2
x=-2/2
x=-1
(x-3)²=x(x-5)
x²+9-6x=x²-5x
x²-x²-6x+5x=-9
-x=-9
x=9
1 votes
Thanks 1
sosomche
merci
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Verified answer
Bonjour,1) 2(4x-5)=4+x
8x-10=4+x
8x-x=4+10
7x=14
x=14/7
x=2
2(x+8)+3=4-3x
2x+16+3=4-3x
2x+19=4-3x
2x+3x=4-19
5x=-15
x=-15/5
x=-3
12x-1=2(5x-2)+1
12x-1=10x-4+1
12x-10x=-3+1
2x=-2
x=-2/2
x=-1
(x-3)²=x(x-5)
x²+9-6x=x²-5x
x²-x²-6x+5x=-9
-x=-9
x=9