Answer:
55
Explanation:
Given the expression:
[tex]13+23+12+7[/tex]
First, introduce parentheses as follows:
[tex]=13+[(23+12)+7][/tex]
Apply the commutative property of addition: 23+12 = 12+23
[tex]=13+[(12+23)+7][/tex]
Next, apply the associative property of addition: (12+23)+7=12+(23+7).
[tex]\begin{gathered} =13+[12+(23+7)] \\ =13+[12+30] \end{gathered}[/tex]
We can then simplify further:
[tex]=13+42[/tex]
By the commutative property of addition: 13+42=42+13
[tex]\begin{gathered} =42+13 \\ =55 \end{gathered}[/tex]
The value of the given expression is 55.
