Question

Solve for the value of n.

Answer 1

• n = 9

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The three given angles form a line (180°) and one of them, the middle one is a right angle.

It means the other two angles add up to 90°:

• 6n + 5 + 4n - 5 = 90
• 10n = 90
• n = 9

Hence the value of n is 9.