Question

30 % nhân x + x = 52 

Answer 1

30%.x+x = 52

\(\frac{30}{100}\).x +x = 52

 \(\frac{3}{10}\). x+ x  = 52

 \(\left(\frac{3}{10}+1\right)x\)= 52

 \(\frac{13}{10}\) .x          = 52

              x         =\(52:\frac{13}{10}\) 

             x          = \(40\)

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