Question

7(3a-5b+c)= 5(6a-9)-8a=

Answer 1

Ответ:

Пошаговое объяснение:

7(3a-5b+c)=21а-35b+7c

5(6a-9)-8a=30a-45-8a=22a-45

Answer 2

Ответ:

21a-35b+7c=30a-45+8a

21a-35b+7c-30a+45-8a=0

-a+35b +7c=-45

Пошаговое объяснение:

Answer 3

To solve the equation 7(3a-5b+c) = 5(6a-9) - 8a, we need to perform the following steps:

Step 1: Distribute the values inside the parentheses. Step 2: Combine like terms. Step 3: Solve for the variable (in this case, 'a').

Let's go through the steps:

Step 1: 7(3a-5b+c) = 5(6a-9) - 8a

Expanding the expressions within the parentheses: 21a - 35b + 7c = 30a - 45 - 8a

Step 2: Combine like terms on both sides of the equation: 21a - 7a = 30a - 8a - 45 + 35b - 7c

Simplifying further: 14a = 22a - 45 + 35b - 7c

Step 3: Now, isolate the variable 'a' on one side of the equation. Let's move the 22a term to the left side by subtracting it from both sides:

14a - 22a = 22a - 22a - 45 + 35b - 7c

Simplify the left side: -8a = -45 + 35b - 7c

Finally, solve for 'a' by dividing both sides by -8:

a = (-45 + 35b - 7c) / -8

So, the solution for 'a' in terms of 'b' and 'c' is:

a = (7c - 35b + 45) / 8