Question

In a parallelogram ABCD,
a) angle C=(3x+15°),angle D=(2x+10°),find the value of x.
b) angle A=5y, angle B=3y+20°,find the value of y.

Answer 1

2x+10=3x+15
10-15=3x-2x
-5=x
X=-5
5y=3y+20°
5y-3y=20°
2y=20°
y=20°/2
y=10°
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Answer 2

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