Question

Aflați x: 1/2•x=3. 2/3•x=8. 3/7•x=6

Answer 1

Răspuns:

Explicație pas cu pas:

$\displaystyle \frac{1}{2} x=3\\x=3:\frac{1}{2}\\x=3\times 2\\x=6\\\\\\\\\frac{2}{3} x=8\\\\ x=8:\frac{2}{3} \\x=\not8 \times \frac{3}{\not2} \\x=4 \times 3\\x=1 \\\\\displaystyle\frac{3}{7} x=6\\x=6:\frac{3}{7} \\x=\not6\times \frac{7}{\not3} \\x=2 \times7\\x=14\\\\\displaystyle \frac{x}{y} :\frac{a}{b} =\frac{x}{y} \times\frac{b}{a}$