Question

7⋅(7a−9)−7⋅(7a+9)=−126.

Answer 1

Ответ:

-126=-126
a=R
Альтернативный ответ:

Answer 2

Пошаговое объяснение:

49а - 63 - 49а - 63 = -126

а = 0

Answer 3

To solve the equation 7(7a - 9) - 7(7a + 9) = -126, we can simplify and solve for 'a' step by step:

First, distribute the 7 to the terms inside the parentheses: 49a - 63 - 49a - 63 = -126

Next, combine like terms on both sides of the equation: 49a - 49a - 63 - 63 = -126 -126 - 126 = -126

Simplifying further: -126 - 126 = -126 -252 = -126

Since -252 does not equal -126, the equation has no solution. In other words, there is no value of 'a' that satisfies the given equation.