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A. 56 B. 41 C. 69 D. 55
x + y = 110 x - y = 28. what do you think? assume y
btw. x = 69,y=41. but don't look at the answer. find out why :) first.!
Well, it says which is the smallest of the two numbers, so I'd have to go with 41 because that is smaller.
Is that right or am I wrong about that one?
41+69=110 looks good to me
Here's the trick: bigger number = (sum+difference)/2 smaller number = (sum-difference)/2
I am so confused on which one it is. :/
So it must be 41 because that is the smaller number.
If you want the smaller number, Calculate (110-28)/2
I calculated that and got 96.
@alain relax you have it!
you have the answer. use it :P
Why does everyone call me Alain? Lol.. my name is Alaina. xD Oh well, it can be short for it. :P And thanks everyone! :)
there only is one solution.
So 41 right?
oh and btw. (110-28) /2 = 41 :P
check your subtraction ^^
RONNCC has a good answer, basically it is best to use substitution in order to solve. He said: "x + y = 110 x - y = 28. what do you think? assume y
0 meaning x>y.
y=x-28 from the second equation, so just substitute this into the first to give: x+x-28 = 110 ---> 2x=138 --> x=69. To find y simply use your first equation: 69+y=110 ---> y=41.
substitution is nice for harder equations, but generally elimination is a good method when the coefficient of x is 1 and they are in a simple form like this.