Solve. 5 = –(–z + 3) a. –8 b. 8 c. –2 d. 2
Mathematics · High School · Wed Jan 13 2021
Answered on
Given the numerical equation:
5 = - ( -z + 3)
Determine the answer.
Solution:
In order to determine the answer for the equation, we first distribute the negative sign to each value inside the parenthesis, hence we must take note that whenever we multiply two numbers, with the same sign the answer will be positive, hence if the numbers have opposite sign, the answer will be negative.
5 = - (-z + 3)
5 = z - 3
Transpose -3 on the other side of the equation, hence it must be taken to note that whenever a number is transposed, the sign changes.
z= 5 + 3
z = 8
Final answer:
b. 8