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Denisss199
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Determina x in fiecare dintre urmatoarele situatii a) 1/5x[(x+2/3):2/9-7]=1 va roggggggggg urgeeeeenntnttttttt dau coroanaaaa

Răspuns :

EagleEyes
1/5*[(x+2/3):2/9-7]=1 
5*1/5*((x+2/3):2/9-7)=5
1/5*((x+2/3):2/9-7)=1
1/5*((x+2/3)*9/2-7)=1
1/5*(9/2x+3-7)=1
1/5*(9/2x-4)=1
9/1-x-4/5=1
9x-8=10
9x=10+8
9x=18
x=2

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