Question

9⋅(3x−7)−3⋅(9x+7)=-84.

Answer 1

Ответ:

=

27х-63-27х-21=-84

х =-84+63+21

Х= 0

Ответ: 0

Answer 2

Let's solve the equation step by step:

1. Distribute the terms within the parentheses: 9 * (3x - 7) = 27x - 63 -3 * (9x + 7) = -27x - 21

2. Substitute the results back into the original equation: 27x - 63 - 27x - 21 = -84

3. Combine like terms on the left side of the equation: (27x - 27x) - 63 - 21 = -84

4. Simplify the equation further: -84 = -84

The equation simplifies to -84 = -84. This means that the equation is an identity and holds true for any value of 'x.' In other words, the solution to the equation is all real numbers (infinite solutions).