Question

tìm x thỏa mãn :\(\frac{2x}{42}=\frac{28}{3x}\)

Answer 1

ta có \(\frac{2x}{42}=\frac{28}{3x}\) suy ra 

2x*3x=28*42

=>6\(x^2=1176\)

=>x² =1176/6=196

=>x=\(\sqrt{196}=14\)

Vậy x=14

k cho mình nha

Answer 2

x=196

Ta có \(\frac{2x}{42}=\frac{28}{3x}\)=> 2x*3x=42*28

                                  =>6*x=1176

                                  =>x=1176/6

                                  =>x=196

Answer 3

2x/42 ==28/3x

=> 2x × 3x = 42 × 28

=> 6x² = 1176

=> x² = 1176 ÷ 6

=> x²  = 196

=> x = 14 hoặc x = -14