The polygons are similar. Find the values of
the variables. Write an equation and solve,
showing ALL the work.
Since they're similar, we can take the similar side that has actual values to find the ratio between the triangles.
7 : 3.5 = 2 : 1
This means:
2y = x + 4
2x = 3y
x - 2y = -4
2x - 3y = 0
2x - 4y = -8
2x - 3y = 0
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y = 8
x - 2y = -4
x - 2(8) = -4
x = 12