Question

The three angles (5x+4) (x-2) and (3x+7) form a straight angle
find the value of x​

Answer 1

Your Solution:

Straight Angle = 180°

ATQ, (5x + 4) + (x - 2) + (3x + 7) = 180°

» 5x + x + 3x + 4 - 2 + 7 = 180

» 9x + 9 = 180

» 9x = 180 - 9

» x = 171/9

» x = 19°

So, The angles are:

5x + 4 = 5(19) + 4 = 99°

x - 2 = (19) - 2 = 17°

3x + 7 = 3(19) + 7 = 64°

[But the question asked for x so, the value of x is 19°]

I hope you got it.

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