How do you answer this
-7x-8y=9
-4x+9y=-22
Elimination please
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How do you answer this
-7x-8y=9
-4x+9y=-22
Elimination please
Method 1:
1. Multiply the first equation by 4 and the second equation by 7.
2. Subtract one equation from the other.
3. Solve for the resulting variable.
4. Use that known variable to get the last variable.
Method 2:
1. Multiply the first equation by 9 and the second equation by 8.
2. Add both equations together.
3. Solve for the resulting variable.
4. Use that known variable to get the last variable.
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