Question

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

Answer 1

Сначала раскрываем скобки
И получаем
1,5х+30-0,8х+28=-5
1,5х- 0,8х=-30-28-5
0,7х= -63
Х=-63:0,7
Х= -90

Answer 2

To solve the equation 5(0.3x + 6) - 4(0.2x - 7) = -5, follow these steps:

1. Distribute the constants inside the parentheses:

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

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

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

   0.7x + 58 = -5

3. Now, isolate the variable x. Subtract 58 from both sides of the equation:

   0.7x + 58 - 58 = -5 - 58

   0.7x = -63

4. Finally, divide both sides by 0.7 to solve for x:

   (0.7x) / 0.7 = (-63) / 0.7

   x = -90

So, the solution to the equation 5(0.3x + 6) - 4(0.2x - 7) = -5 is x = -90.