The sum of 69 and 42 is five more than the difference of 146 and a number. Calculate the value of the unknown number.
1 answer:
As an equation, we have:
69+42=5+(146-x)
You just have to simplify:
111=5+(146-x)
106=146-x
-40=-x
40=x
Your unknown number is 40
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y^2=169
y = √169
y = + / - 13
Answer
y = -13 or y = 13
