Question

30% * x + x= 52

Answer 1

\(30\%\cdot x+x=52\)

\(\left(\frac{3}{10}+1\right)x=52\)

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

\(x=40\)

Answer 2

\(\text{Ta có: 30% * x + x= 52 }\)

\(\Rightarrow\frac{3}{10}x+x=52\)

\(\Rightarrow\left(\frac{3}{10}+1\right)x=52\)

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

Answer 3

Đổi 30% = 3/10

=> 3/10 * x + x = 52

=> x * ( 3/10 + 1 ) = 52

=> x * 13/10 = 52

=> x = 52 : 13/10

=> x = 10

Vậy x = 40

Answer 4

30% * x + x = 52

x*( 0,30 +1) = 52

x*1,3= 52

x = 52 : 1,3

x = 40

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