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sladkih [1.3K]
3 years ago
11

Two decimal numbers have a difference of 0.7 And and a sum of 1.What are the numbers?

Mathematics
2 answers:
Andreas93 [3]3 years ago
4 0
Use an equation for questions like these:
I'll use x and y as the unknown numbers
x-y=0.7
x+y=1
Just choose either x or y to solve for
y=x-0.7
y=-x+1
Then since since they're both equal to y then they can equal each other
x-0.7=-x+1
2x-0.7=1
2x=1.7
x=0.85
Then just grab one of the equations and use it to find y
0.85+y=1
y=0.15

So the two numbers are 0.85 and 0.15
klio [65]3 years ago
3 0
The two numbers are 0.85 and 0.15
if you add them together you get 1, 0.85+0.15=1
and if you subtract them you get 0.7, 0.85-0.15=0.7
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