Question

Is 3x + 12 +x and 4 (3 + x) equivalent .Why and Whynot?

Answer 1

no because yes 4 multiplied by 3 its x but the 4 can still not replace the x

Answer 2

Answer: They are

Step-by-step explanation: the first one you add both terms of x’s and you get 12+4x. The second one you use the distributive property, 4*3+4*x and get 12+4x.