Which equation is an identity? 3w + 8 – w = 4w – 2(w – 4) 5y + 5 = 5y – 6 6m – 6 = 7m + 9 – m 8 – (6v + 7) = –6v – 1

The condition for an expression to be an identity is that both sides of equality must give the same value.

In this case, the equation that fulfills that condition is the first equation (1).

Let’s prove it:

1)

Applying distributive property:

Joining together similar terms on both sides of the equality:

The other equations do not fulfill the condition:

2)

  >>>>>>>This is not logic

3)

 >>>>>>>This is not logic

4)

  >>>>>>>This is not logic

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

x-3y=4

step-by-step e