Solve for x_25
x_{25}=2390
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10+x_{25}=12\times 200
Multiply both sides by 200.
10+x_{25}=2400
Multiply 12 and 200 to get 2400.
x_{25}=2400-10
Subtract 10 from both sides.
x_{25}=2390
Subtract 10 from 2400 to get 2390.
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