How to do 18th question.
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a+b=180. $ a-b=80
Solve a b we get a=130 b=50
Solve a b we get a=130 b=50
Nananenu:
Can u write full answer
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a + b = 180° .......{ linear pair }
a - b = 80° .......{ given }
add equation (1)&(2)
a+b+a-b=180°+80°
2a=260°
a = 130°
a - b = 80
130 - b = 80
-b = 80 -130
-b = -50
b = 50°
a,b= 130° , 50°
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I hope you understand well
➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️
a + b = 180° .......{ linear pair }
a - b = 80° .......{ given }
add equation (1)&(2)
a+b+a-b=180°+80°
2a=260°
a = 130°
a - b = 80
130 - b = 80
-b = 80 -130
-b = -50
b = 50°
a,b= 130° , 50°
▶️▶️▶️▶️▶️▶️▶️▶️▶️▶️▶️▶️▶️
I hope you understand well
➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️
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