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Mathematics, 14.12.2021 23:40 2002babygurl

In the diagram, m∠7=30°, m∠8=3x° and m∠9=4x−10°. Find the value of x?

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In the diagram, m∠7=30°, m∠8=3x° and m∠9=4x−10°. Find the value of x?...
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