Question

tìm x thỏa mãn:\(\frac{22+x}{49}=\frac{5}{7}\)

Answer 1

22+x/49= 5/7

=> (22+x) x 5= 49 x 5

=> 110+5x=245

=> 5x= 135

=> x=27

Answer 2

\(\frac{22+x}{49}=\frac{5}{7}\)

\(\Rightarrow7\times\left(22+x\right)=5\times49\)

\(\Rightarrow154+7x=245\)

\(\Rightarrow7x=245-154\)

\(\Rightarrow7x=91\)

\(\Rightarrow x=13\)

Answer 3

\(\frac{22+x}{49}=\frac{5}{7}\)

\(\Rightarrow22+x=5\times7\)

\(\Rightarrow22+x=35\)

\(\Rightarrow x=35-22\)

\(\Rightarrow x=13\)