Question

-9а-(7-8а)=… А) -17а-7; Б) -17а+7; В) -а+7; Г) -а-7.

Answer 1

Ответ:

Г) -а-7

Объяснение:

-9а-(7-8а)=(-9а)-7+8а=(-а)-7

Answer 2

To simplify the given expression, let's start by distributing the negative sign outside the parentheses:

-9a - (7 - 8a)

When we remove the parentheses, the negative sign affects both terms inside:

-9a - 7 + 8a

Now let's combine like terms by adding the "a" terms and the constant terms separately:

(-9a + 8a) - 7

Simplifying the "a" terms:

-1a - 7

This can be written as "-a - 7". Therefore, the correct answer is option Г) -a-7.