Question

Which of the following expressions is equivalent to the expression 5 (9 x 4)+7+(3+1)?(1 point)O (5 + 7) (9 x 4) + 3+1O 9(5 + 4) + 1 + (7 X 3)O 1+(3+ 7) + 4(5 x 9)O 7(3 + 1) +5+ (9 x 4)

Answer 1

We can use the commutative property and associative property in order to solve this problem:

associative property:

(x*y)*z = x*(z*y)

commutative property:

a + b = b + a

Therefore:

5 (9 x 4)+7+(3+1) = 191

We can rewrite the left hand side of the equation as:

1 + (3+7) + 4(5x9) = 191