Answer: -10 + 34u
Explanation:
1) Set up the equation
A = 2B + 2H
2) Substitute the variables
A = 2(10u+3) + 2(7u-8)
3) Solve the equation
A = 20u + 6 + 14u - 16
4) Simplfy
A = 34u - 10
A = -10 + 34u
2 x (10u + 3) + 2 x (7u -8)
20u + 6 + 14u - 16
34u - 10
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