Step-by-step explanation:
dear by changing the sign by elimination method everything gets cancelled
(7x-3y)^2 hope this helps
Answer: 9.05
the answer is in here: https://brainly.in/question/13877695
Step-by-step explanation:
Answer:
3x +45°=180° (due to straight angle)
or, 3x= 180°-45°
or,3x= 135°
or,X=135°/3
X =45°.ans