Question

Which of the following equations has exactly one solution?
A. 4x – 4 + 2x = 6x - 4
B. 2(4x + 5) = 8x + 10
C. 4x - 8 = 4(x - 4)
D. 3x + 5 = 2x - 6

Answer 1

D, answer is x=-11 ….

Answer 2

A. 4X+2X-6X = -4+4
A. 0X = 0 Every number

B. 8X+10 = 8X+ 10
B. 8X -8X = 10-10
B. 0X = 0. Every number

C. 4x -8 = 4X -16
C. 4x-4x = -16+ 8
C. 0x = -8 >>no solution

D. 3X + 5 = 2x -6
D. 3x-2X = -6-5
D. x = -11 one solution

Answer D