Question

in parallelogram ABCD angle A =X°and Angle b =(3x+20°)them find x ​

Answer 1

We know that angle A and angle and angle B are making interior angles.

$< a + < b = 180 \\ x + 3x + 20 = 180 \\ = > 4x = 180 - 20 \\ = > 4x = 160 \\ x = 40$

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Answer 2

A+B=180° (adjacent angle of llgm are supplementary)

x+3x+20°=180°

4x+20°=180°

4x=180°-20°

4x= 160°

x=160°/4

x=40°

therefore x=40° this is the answer thank me please