Question

4х+7,8>4,5х-4,2 пжжжжжж​

Answer 1

4х + 7,8 > 4,5х - 4,2

4x - 4,5x > -4,2 - 7,8

-0,5x > - 12

x < 24

Ответ: (-∞; 24)

Answer 2

To solve the inequality 4x + 7.8 > 4.5x - 4.2, we can follow these steps:

1. Simplify the equation by removing the decimal points: 4x + 7.8 > 4.5x - 4.2 Multiply every term by 10 to eliminate the decimals: 40x + 78 > 45x - 42

2. Rearrange the equation by bringing all the x terms to one side and the constant terms to the other side: 40x - 45x > -42 - 78 -5x > -120

3. Divide both sides of the inequality by -5, remembering that dividing by a negative number flips the inequality sign: x < (-120) / (-5) x < 24

Therefore, the solution to the inequality 4x + 7.8 > 4.5x - 4.2 is x < 24.