Question

Решите 2/5x -3 = 3/8

Answer 1

$\frac{2}{5}x-3=\frac{3}{8}\\ \\ \frac{2}{5}x= \frac{3}{8}+3\\ \\ \frac{2}{5}x= 3\frac{3}{8}\\ \\ x=3\frac{3}{8}:\frac{2}{5}\\ \\ x=\frac{27}{8}\cdot\frac{5}{2}\\ \\ x=\frac{135}{16}\\ \\ x=8\frac{7}{16}$

Ответ: $8\frac{7}{16}$

Answer 2

2/5х-3=3/8

2/5х=27/8

0,4х=3,375

х=3,375÷0,4

х=8,4375

Answer 3

To solve the equation $\frac{2}{5}x - 3 = \frac{3}{8}$, follow these steps:

Step 1: Get rid of the constant term on the left side of the equation by adding 3 to both sides: $\frac{2}{5}x = \frac{3}{8} + 3$

Step 2: Simplify the right side of the equation: $\frac{2}{5}x = \frac{3}{8} + \frac{24}{8} = \frac{27}{8}$

Step 3: To isolate $x$ on the left side of the equation, multiply both sides by the reciprocal of $\frac{2}{5}$, which is $\frac{5}{2}$: $x = \frac{27}{8} \times \frac{5}{2}$

Step 4: Multiply the numerators and denominators: $x = \frac{135}{16}$

The solution to the equation is $x = \frac{135}{16}$.