Question

5(0,3х+6)-4(0,2х-7)=-5

Answer 1

Пошаговое объяснение:

5(0,3x+6)-4(0,2x-7)=-5

1,5x+30-0,8x+28=-5

0,7x=-63

x=-90

Answer 2

Let's solve the equation step by step:

1. Distribute the constants on the left side of the equation:

   5(0.3x + 6) - 4(0.2x - 7) = -5

   This simplifies to:

   (5 * 0.3x + 5 * 6) - (4 * 0.2x - 4 * 7) = -5

2. Now, distribute the constants:

   (1.5x + 30) - (0.8x - 28) = -5

3. Remove the parentheses:

   1.5x + 30 - 0.8x + 28 = -5

4. Combine like terms on both sides of the equation:

   (1.5x - 0.8x) + (30 + 28) = -5

   0.7x + 58 = -5

5. Now, isolate the variable 'x' by moving 58 to the other side of the equation by subtracting it from both sides:

   0.7x = -5 - 58

   0.7x = -63

6. Finally, solve for 'x' by dividing both sides by 0.7:

   x = -63 / 0.7

   x ≈ -90

So, the solution to the equation is approximately x ≈ -90.