Answer:
1) commutative property of addition
2)associative property of addition
3) commutative property
Step-by-step explanation:
1) You switched the numbers in the parenthesis, which in this case is 3 and 4.
2) You just moved the parenthesis which in this case is (1+2) to (2+3)
3) You switched the numbers in the equation
X - 1 2/3 = -2
x - 1 2/3 + 1 2/3 = -2 + 1 2/3
x = -1/3
Answer : 7.2 hours
Step by Step Explanation: 12 divided by five equals 2.4
2.4 times 3 equals 7.2