Question

Is 4d + (15 + 3d) equivalent to (4d + 15) + 3d ?

Answer 1

Answer:

$\boxed{\boxed{\sf{Yes,~7d+15=7d+15}}}$

Solution Steps:

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1.) Solve $\bold{4d+(15+3d)}$:

• Combine 4d and 3d: $=7d+15$

2.) Solve $\bold{(4d+15)+3d}$:

• Combine 4d and 3d: $=7d+15$

3.) Compare:

• $7d+15=7d+15$

So your answer $\bold{7d+15=7d+15}$.

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Answer 2

Answer:

Yes it is

Step-by-step explanation:

4d + 3d = 7d so 7d + 15 would be the expression for both except it would only be 3d + 4d = 7d and 7d + 15 is the same as the first expression that I got from evaluating 4d + (15 + 3d).