The missing number that will make both expressions to be equivalent expressions is: 110.
What are Equivalent Expressions?
Two expressions are equivalent if they have the same value.
Given the following expressions:
- Expression I: 200r -(-110)
- Expression II: _ + 200r
Let x represent the missing number in the second expression. Thus, equate both expressions and solve for x.
200r -(-110) = x + 200r
200r + 110 = x + 200r
Add like terms
200r - 200r + 110 = x
110 = x
x = 110
Therefore, the missing number that will make both expressions to be equivalent expressions is: 110.
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