Question

What did Laura do wrong? What did Laura do right?
Laura’s Work Number Property Used
5x + 2y + 3(2x + y) + 4 Given
1) 5x + 2y + 3x + 3y + 4 Distributive Property
2) (5x + 3x) + (2y + 3y) +4 Commutative Property of Addition
3) 8x + 5y + 4 Combine Like Terms
4) 17xy Combine Like Terms

Answer 1

i dont think she has done anything right

Answer 2

because she did the distributive property wrong

Answer 3

so the rest will be wrong

Answer 4

She was right to use the distributive property, however, she distribute the 3 wrong.
She was right to use the commutative property...although because of the mistake when using the distributive property, the numbers are wrong.
She was correct in combining like terms for step 3,(except the numbers are wrong) but for step 4, she did not combine them correctly.