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max2010maxim [7]
3 years ago
7

How fo I substitute -x+y=-13 3x-y=19

Mathematics
1 answer:
nika2105 [10]3 years ago
3 0

Answer:

x=3; y= -10

I will prefer addition of equation instead of substitution, but you asked how to substitute

Step-by-step explanation:

-x+y=-13

y=x-13

3x-(x-13)=19

3x-x+13=19

2x=6, x=3

-3+y=-13, y=-13+3, y=-10

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