Question

Решите

Answer 1

$15*(\frac{2}{3})^2-10\frac{1}{3}*2=15*\frac{4}{9}-\frac{31}{3}*2=5*\frac{4}{3}-\frac{62}{3}=\frac{20}{3}-20\frac{2}{3}= \\ =6\frac{2}{3}-20\frac{2}{3}=-14$

Answer 2

Solving Equations

To solve the equation 0,5*(x+3)=0,8*(10-x), we can follow these steps:

1. Distribute the multiplication on both sides of the equation: - 0,5*(x+3) = 0,8*(10-x) - 0,5x + 1,5 = 8 - 0,8x

2. Combine like terms: - 0,5x + 0,8x = 8 - 1,5 - 1,3x = 6,5

3. Solve for x by dividing both sides of the equation by 1,3: - x = 6,5 / 1,3 - x = 5

Therefore, the solution to the equation 0,5*(x+3)=0,8*(10-x) is x = 5