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marvinsductant6710
30.09.2019 •
Mathematics
Solve this eqution with work also show work
solve for x and y
x=-y+5
y=-3x+3
Solved
Show answers
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Ответ:
Ответ:
Since y = -3x + 3
The y value in the first equation can be substituted for -3x + 3
I.e. x = - (-3x + 3) + 5
So where you see 'y' in the first equation, put in what y actually is.
Now simplify
x = 3x - 3 + 5 [two minuses makes a positive]
x = 3x + 2
-2x = 2
so x = 2/-2 = -1
With the value of x you found, substitute it in to find y
I.e. y = -3(-1) + 3
y = 3 + 3 = 6
So x = -1 and y = 6
Ответ:
Step-by-step explanation:
since 9n and n and both like terms, you simply add the two like terms together to get your answer. so 9n+n= 10n and 17+4=21. so your answer would be 10n+21