Question

2. If the angles 2X +25 and 3x+10 are supplementary,find the value of x.

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Answer 1

Sum of two angles which makes 90° are called complementary angles.

Therefore,

(2x-5)+(x-10)=90

2x+x-5-10= 90

3x-15= 90

3x= 105

x= 105/3

x= 35

Answer 2

Answer:

2x+5 +3x+10=180

5x+15=180

5x=165

X=33