Question

for which equation is x=-1/2 a solution?

a. 7-4x=-9
b. 9x+2=7
c. 6+8x=-10
d. 10x-3=-8

Answer 1

Plug in x for each equation until the solution is found

7-4(-1/2)=-9
7+2=-9
\[9\neq-9\]

9(-1/2)+2=7
-4.5+2=7
\[-2.5\neq7\]

6+8(-1/2)=-10
6-4=-10
\[2\neq-10\]

10(-1/2)-3=-8
-5-3=-8
\[-8=-8\]

x=-1/2 is a solution for equation d.

Answer 2

thanks for the huge helped! you rock :)