Which expressions are equivalent?

3x + 5x and 8x
3(x + 4) and 3x + 12
a + b + a and 2a + b
18x + 2y and 15x + 3x + 2x
3a + 4a + 10 and 17a

Respuesta :

Answer:

3x + 5x and 8x

3(x + 4) and 3x + 12

a + b + a and 2a + b

Step-by-step explanation:

Answer:

The answer is obviously the 1 and  and 3 one

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Step-by-step explanation: