Question

Dante wrote several equations and determined that only one of the equations has infinitely many solutions. Which of these equations has infinitely many solutions?

A.6(x+3)+x=7x+2+1
B.6(x+3)+x=7x+5
C.6(x+3)+x=6x+3+15
D.6(x+3)+x=7x+9+9

Answer 1

D; 6(x + 3) + x = 7x + 9 + 9

Explanation:

6x + 18 + x = 7x + 9 + 9

7x + 18 = 7x + 18

The equation has equivalent coefficients and constants on both sides, which proves that it has infinitely many solutions.

Answer 2

The answer is D I believe