(x-73) + (x-65) = x
2x - 138 = x
2x - x = 138
x = $138 cost of the bike
I think it’s 8/4 because Tia is sharing 8 cookies among her 4 friends and it you divide 8 divided by 4 you get 2 cookies which means each friend will get 2 cookies.
Answer:
2+2=4
Step-by-step explanation:
1+1+1+1=4
We can solve this by setting up 2 equations. We can use any letters like. For now, I'll use x and y.
So now we know that x - y = 0.7 and x + y = 1.
Now we can eliminate one of the letters by adding or subtracting one equation from the other. I am going to eliminate y by adding the two together (the y and the -y cancel).
This gives us 2x = 1.7, and so x = 1.7 ÷ 2 = 0.85
Finally, we can substitute x for 0.85 back into one of the original equations to figure out what y equals. I'm going to use x + y = 1.
So now we have 0.85 + y = 1, so y = 1 - 0.85 = 0.15
The numbers, therefore, are 0.85 and 0.15 (you can check by using the other equation).
Hope this helps!
