Question

What value of h makes the statement true?

(17 + h) + (–9) = 17 + (5 + (–9))

Answer 1

9 because 17 + 9 = 26 and 26 + (-9) is 17

Answer 2

Associative property of addition
\[(a+b) + c = a+(b+c)\]
\[(17+h) + (-9) = 17+(5+(-9))\]
so h will be?

Answer 3

5?

Answer 4

correct

Answer 5

Move all the numbers to one side of the equation, leaving the variable on the other:
\[h=9-17+17+(5+(-9))\]
Solve for h:
\[h=5\]

Answer 6

Ok, thank you all.

Answer 7

anytime:)

Answer 8

No problem!