Step-by-step explanation:
b+75+31=180
b+106=180
b=180-106
b= 74
a+b=180
a+74=180
a=180-74
a= 106
According to me if a number is not divisible by 2,it is not multiple of 4.
Answer:
(-1,-1),(1,-4)
it is the wright answer
Answer:Check the attached
Answer:3