Question

Solution
2(x + 1) = 2x + 2.

Answer 1

( − ∞ , ∞ )

Explanation:

Distribute the 2 in 2 (x+1)

2 ⋅ x = 2 x

2 ⋅ 1 = 2

Combine:

2 x + 2

Equation is now:

2 x + 2 = 2 x + 2

Subtract 2 from both sides of the equation:

2 x = 2 x

Divide both sides by 2:

x=x

Both sides of the equation are the same:

x = x

Any real number or:

( − ∞ , ∞ )

Answer 2

Infinity

Explanation:

It is equal to nothing.

2x+2=2x+2

-2x -2x

2=0x+2

-2 -2

0=0