Match these equations and their solutions.
-$x = 8$
A) $5 ( x - 3 ) - 9 ( x - 3 ) = - 20$
B) $8 ( x - 9 ) - 9 ( x - 6 ) = - 24$
C) $9 ( x - 8 ) - 8 ( x - 7 ) = - 11$

Question

Match these equations and their solutions.
-$x = 8$ 
A) $5 ( x - 3 ) - 9 ( x - 3 ) = - 20$ 
B) $8 ( x - 9 ) - 9 ( x - 6 ) = - 24$ 
C) $9 ( x - 8 ) - 8 ( x - 7 ) = - 11$

Quizplus · Accepted Answer

Substitute x = 8 into each equation: 
A) $5 ( 8 - 3 ) - 9 ( 8 - 3 ) = - 20$ 
Simplifying gives: 
0 = 0, which is true for any value of x. 
B) $8 ( 8 - 9 ) - 9 ( 8 - 6 ) = - 24$ 
Simplifying gives: 
-10 = -24, which is false. 
C) $9 ( 8 - 8 ) - 8 ( 8 - 7 ) = - 11$ 
Simplifying gives: 
0 = -11, which is false.

Therefore, only equation A has x=8 as its solution.

Match These Equations and Their Solutions x=8x = 8x=8 A) 5(x−3)−9(x−3)=−205 ( x - 3 ) - 9 ( x - 3 ) = - 205(x−3)−9(x−3)=−20

Match These Equations and Their Solutions $x = 8$ A) $5 ( x - 3 ) - 9 ( x - 3 ) = - 20$