andrecoral105
03.12.2021 •
Mathematics
To use the elimination method, you can add the two equations in a system of equations to eliminate one of the variables.
Add the two equations.
{−9x+y=10
10x−y=−9
What is the resulting equation?
A 0 + 2y = 10 + 2, y = , 1
B x + 0 = 1x, + 0 = 1
C x + 0 = 19x, + 0 = 19
D 19x + 2y = 19
P.S its not C pls help asap
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Ответ:
x=1 y=19
Step-by-step explanation:
Let's solve your system by elimination.
−9x+y=10; 10x−y=−9
−9x+y=10
10x−y=−9
Add these equations to eliminate y:
x=1
Then solve x=1 for x:
x=1
Now that we've found x let's plug it back in to solve for y.
Write down an original equation:
−9x+y=10
Substitute1forxin−9x+y=10:
(−9)(1)+y=10
y−9=10(Simplify both sides of the equation)
y−9+9=10+9(Add 9 to both sides)
y=19
Hope this helps, I don't really get the answer choices though
Ответ: