Question

7phần3 nhân x + x = 42

giúp tui đi mà mai là nộp bài cô rùi huhuhu

Answer 1

\(\frac{7}{3}x+x=42\)

\(\frac{7}{3}x+1x=42\)

\(\left(\frac{7}{3}+1\right)x=42\)

\(\frac{10}{3}x=42\)

\(x=42:\frac{10}{3}\)

\(x=12,6\)

Answer 2

\(\frac{7}{3}.x+x=42\)

\(\Rightarrow x.\left(\frac{7}{3}+1\right)=42\)

\(\Rightarrow x.\frac{10}{3}=42\)

\(\Rightarrow x=8,4\)

Vậy x = 8,4

Answer 3

\(\frac{7}{3}\cdot x+x=42\)

\(\Rightarrow\frac{10}{3}x=42\)

\(\Rightarrow x=\frac{63}{5}\)

Answer 4

                    7/3 *x +x= 42

                     7/3 * x +1 * x = 42

                    (7/3 + 1) * x =  42

                       10 / 3 * x = 42

                                x = 42 : 10/3

                                x = 12,6