\{ 200 ( y - 1 ) = x + 25
Solve for x
x=200y-225
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200y-200=x+25
Use the distributive property to multiply 200 by y-1.
x+25=200y-200
Swap sides so that all variable terms are on the left hand side.
x=200y-200-25
Subtract 25 from both sides.
x=200y-225
Subtract 25 from -200 to get -225.
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