2020IRodriguez385
08.12.2021 •
Mathematics
2. AABC - AADE; find x
B
D
8
20
А
2x + 3
15
E
с
Solved
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Ответ:
Step-by-step explanation:
∠A + ∠B = 90 {∠A & ∠B are complementary}
x + 16 + x - 12 = 90
x + x + 16 - 12 = 90 {Combine like terms}
2x + 4 = 90 { Subtract 4 form both sides}
2x = 90 - 4
2x = 86 {divide both sides by 2
x = 86/2
x = 43