Solve:negative 1 over 2 x + 3 = −x + 7 (5 points) Select one: a. 1 over 2 b. 8 c. −8 d. 2
Mathematics · High School · Tue Nov 03 2020
llm
Answered on
Given the numerical statement:
negative 1 over 2 x + 3 = −x + 7
Solution:
This can be written as
-1 / (2x + 3) = x + 7
Cross multiply the two equations in order to cancel out 2x + 3.
= (2x + 3) (x + 7 +1)
= (2x + 3)( x + 8 )
Equate each factor to 0 in order to find the value of x.
2x + 3 = 0
x =3/2
x + 8 =0
x = -8
Final answer:
x =3/2
x = -8