Answer:
A, C
Step-by-step explanation:
10x+ 4y = -2
5x -2y = 2
We can multiply the first equation by 1/2
5x+2y = -1
And then add the equations to eliminate y
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10x +0y = 1
Adding the equations will not eliminate any variables
15x +2y =0
Multiply the bottom equation by 2 and then subtract
10x -4y = 4
-10x +4y = -4
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0x +8y = -6 will eliminate x
Answer A, C
When multiplying the bottom equation by two, you get 10x-4y=4
After subtracting 10x-4y=4 and the top equation you will be able to eliminate the variable x.
You can also also get the same result and eliminate a variable with answer A.
Hope this helps :)
A. and D.
1 7/15
4/5 = 12/15
2/3 = 10/15
12/15 + 10/15 = 22/15 or 1 7/15
