Question

А) 5*(-7-а)=-35-5а б) -5*(7-а)=-35+5а

Answer 1

-35+5а=-35+5а
0=0
ответ:
0=0

Answer 2

а) Let's solve the equation step by step:

5 * (-7 - a) = -35 - 5a

First, distribute the multiplication:

5 * (-7) + 5 * (-a) = -35 - 5a

Simplify:

-35 - 5a = -35 - 5a

The equation simplifies to -35 - 5a = -35 - 5a, which means that both sides of the equation are equal. Therefore, this equation is an identity, and it holds true for any value of 'a'.

b) Let's solve the equation step by step:

-5 * (7 - a) = -35 + 5a

First, distribute the multiplication:

-5 * 7 + (-5) * (-a) = -35 + 5a

Simplify:

-35 + 5a = -35 + 5a

The equation simplifies to -35 + 5a = -35 + 5a, which means that both sides of the equation are equal. Therefore, this equation is also an identity and holds true for any value of 'a'.