Which of the following pairs of expressions are equivalent?

Question

1.6(y+3) and 6⋅y+3
2. 12⋅t+6 and 12(t+1/2)
3. 8⋅c+40 and 8(c−5)
4. −5(a−1) and −5⋅a−5

Answer 1

The following pairs of expressions are equivalent:

1. 6(y+3) and 6⋅y+3
2. 12⋅t+6 and 12(t+1/2)