For the equation $\frac { 3 } { 200 }$ $+$ $\frac { x } { 50 }$ $=$ $\frac { 7 } { 100 }$:  

1. Find a simpler equivalent equation (i.e., an equivalent equation with no fractions) and solve for $x$.

   Hint 1(a):

   Multiply the equation by a common multiple of the denominators to remove the fractions.

   Hint 2(a):

   $200\left(\frac{3}{200}+\frac{x}{50}=\frac{7}{100}\right)$

   $3+4x=14$

   Hint 3(a):

   Solve for $x$.

2. Which method listed in this lesson's Math Notes box did you use in part (a)?