Question

0.7*(0.2c-9)-4*(0.25c-3)=​

Answer 1

Ответ:

0.7*(0.2с-9)-4*(0.25с-3)=0.14-6.3-11с+132=-10.86с+125.7

Answer 2

To solve the equation 0.7(0.2c - 9) - 4(0.25c - 3), you'll need to simplify and solve for the variable 'c'. Here's the step-by-step process:

1. Distribute the constants to the terms inside the parentheses:

   0.7 * 0.2c - 0.7 * 9 - 4 * 0.25c + 4 * 3

2. Perform the multiplications:

   0.14c - 6.3 - 1c + 12

3. Combine like terms:

   (0.14c - 1c) + (-6.3 + 12)

4. Further simplify:

   -0.86c + 5.7

So, the simplified equation is -0.86c + 5.7. If you want to solve for 'c', set the equation equal to 0 and solve for 'c':

-0.86c + 5.7 = 0

Now, isolate 'c' by moving the constants to the other side:

-0.86c = -5.7

Finally, divide by -0.86 to solve for 'c':

c = -5.7 / -0.86

c ≈ 6.6279 (rounded to four decimal places)

So, the solution for 'c' is approximately 6.6279.