Question

Which of the following equations can be described as having an infinite number of solutions? (hint: use calculator)

a. 2x+4x-3=6x+4
b.5x+15=3x+20-5
c.8x-6=4(2x-1)
d.10x+3=2(5x+1)+1

Answer 1

An infinite number is the same equation on both sides.


Answer: d

Distribute
10x+3=10x+2+1
Cancel like terms
3=2+1
Add
3=3
3=3 is a true statement and is equal on both sides