Question

solve this question it is from maths class 9

Answer 1

add both the equation
you will get
A+2B +C = 238
A+B+C +B = 238
180+ B = 238
B = 238-180= 58
A+B = 108
A+ 58 = 108
A = 50
B + C = 130
58 + C = 130
C = 72

Answer 2

A + B = 108. 1

B + C = 130. 2

And we know it's a triangle so

A + B + C = 180. 3

Add 1 and 2 and subtract it with 3

A + 2B + C - ( A + B + C ) = 108 + 130 -180

B = 58.

Put in equation 1 and 2

A = 50

C = 72.

So this was the answer to your question