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Solve for x and Y: 2x + 2y = 10 2x + y = 7
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You can use the substitution or elimination method to solve this problem. I will show you how to use both.
Elimination method: subtract one equation from the other in order to eliminate one variable:
2x + 2y = 10
- 2x + y = 7
0x + y = 3
Therefore, y = 3
Solve for x:
Substitution method: rearrange one equation to create an expression for one variable, and substitute it into the second equation:
2x+y=7 --> y=7-2x
x = 2
y = 7-2(2)
y = 7-4
Therefore, x = 2 and y = 3 as solved using both methods.
Posted by crmhaske on May 13, 2013 at 2:58 AM (Answer #1)
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