Answer:
S=7
t=1
Explanation:
Since we need to make these triangles congruent, s+36=43, and t+39=40. Solve for s by subtracting 36 from both sides of the equation (s+36-36=43-36 s=7), then solve for t by subtracting 39 from both sides (t+39-39=40-39 t=1)
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