s11598000 s11598000

01-10-2020
Mathematics

contestada

∠A and∠B are vertical angles. If ∠A=(3x−21) ∘ and ∠B=(2x−13) ∘ , then find the value of x.

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wegnerkolmp2741o wegnerkolmp2741o

01-10-2020

Answer:

x=8

Step-by-step explanation:

Vertical angles are equal

<A = <B

3x-21 = 2x-13

Subtract 2x from each side

3x-2x-21 = 2x-13-2x

x-21 = -13

Add 21 to each side

x-21+21 = -13+21

x = 8

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