3 + (5 + 7) Use the commutative property of operations to reverse the numbers in the expression. Use the associative property of

Question

3 years ago

12

operations to change the grouping after reversing the numbers in the expression. Evaluate the expression.

2 answers:

Natasha_Volkova [10] · Answer 1 · 2022-10-02T15:47:00+03:00

Answer:

Use the commutative property of operations to reverse the numbers in the expression.

✔ 3 + (7 + 5)

Use the associative property of operations to change the grouping after reversing the numbers in the expression.

✔ (3 + 7) + 5

Evaluate the expression.

✔ 15

Step-by-step explanation:

Fantom [35] · Answer 2 · 2022-10-02T13:51:32+03:00

Fantom [35]3 years ago

3 0

Answer:

commutative property:

A + B = B + A

So we have

3 + (5 + 7) = (5 + 7) + 3

Now distributive means that:

A + (B + C) = (A + B) + C

So (5 + 7) + 3 = 5 + (7 + 3)

now the equation is easier to solve, because 7 + 3 = 10

5 + (7 + 3) = 5 + 10 = 15