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Emilyb13
@Emilyb13
May 2019
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Bonjour les gens quelqu'un pourrait m'aider svp? Merci! (Il y a une photo)
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ggdu19
Verified answer
Bonjour,
1)
2*x+32=90 <=> 2*x=90-32
<=> 2x=58
<=> x=58/2
<=>
x=29
2)
(x/3)-18=39 <=> x/3=39+18
<=> x/3=57
<=> x=57*3
<=>
x=171
3)
x*4+3*x=21 <=> 7*x=21
<=> x=21/7
<=>
x=3
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Verified answer
Bonjour,1)
2*x+32=90 <=> 2*x=90-32
<=> 2x=58
<=> x=58/2
<=> x=29
2)
(x/3)-18=39 <=> x/3=39+18
<=> x/3=57
<=> x=57*3
<=> x=171
3)
x*4+3*x=21 <=> 7*x=21
<=> x=21/7
<=> x=3