Question

A) 9x-(8+5x)= B) -(8a+1)+5(4a-3)=помогите пж ​

Answer 1

А) 9х-(8+5х)=9х-8-5х=4х-8
В) -(8а+1)+5(4а-3)=-8а-1+20а-15=12а-16

Answer 2

A) To solve the equation 9x - (8 + 5x) = 0, follow these steps:

9x - (8 + 5x) = 0

First, distribute the negative sign inside the parentheses:

9x - 8 - 5x = 0

Combine like terms:

(9x - 5x) - 8 = 0

4x - 8 = 0

Next, isolate the variable by adding 8 to both sides of the equation:

4x = 8

Finally, solve for x by dividing both sides of the equation by 4:

x = 8/4

Simplifying further:

x = 2

Therefore, the solution to the equation is x = 2.

B) To solve the equation -(8a + 1) + 5(4a - 3) = 0, follow these steps:

-(8a + 1) + 5(4a - 3) = 0

First, distribute the negative sign and the 5:

-8a - 1 + 20a - 15 = 0

Combine like terms:

(20a - 8a) - 1 - 15 = 0

12a - 16 = 0

Next, isolate the variable by adding 16 to both sides of the equation:

12a = 16

Finally, solve for a by dividing both sides of the equation by 12:

a = 16/12

Simplifying further:

a = 4/3

Therefore, the solution to the equation is a = 4/3.