Asked by Anonymous

How would you solve these systems? I need help

1. X=3
2x-4y=5

2. X=3
4y=2x+18

3. Y=3
4y=2x+18
Answered by Anonymous
1. Plug x = 3 into the equation 2x - 4y = 5 and solve.
Do the same for 2 and 3.
Answered by Anonymous
It's substitution
Answered by Anonymous
I know it is but how would you do that's what I'm asking.
Answered by Damon
If you know that x = 3 for example
Then use 3 instead of x in the next equation
and all will be well.
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