Question

Solutions To Equation? I Was In The Hospital When We Went Over This In Class, Can Someone Answer & Explain?
3(4x - 3) - 7x = 5x - 9
A.) None
B.) One
C.) Infinite
Medal To Best Answer! :)!

Answer 1

i believe it's infinite.

12x - 9 - 7x = 5x - 9
5x - 9 = 5x - 9

no matter what you put in there for x, it's going to equal the same on both sies of the equation

Answer 2

substitute 0, for example, for x:

3( (4*0) - 3) - 7 (0) = 5 (0) - 9
3 (-3) - 0 = 0 - 9
-9 = -9

Answer 3

one more example.
substitute 1 for x:

3 ((4*1) - 3))- 7(1) = 5 (1) - 9
3 (4-3) - 7 = 5 - 9
3 (1) - 7 = 5 - 9
-4 = - 4

Answer 4

Thank You Very Much! I Love Your Explanation!