Question

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

Answer 1

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