The sum of the interior angles of a triangle is 180 degrees
Answer:1350x,y-4
Step-by-step explanation:
Standard form is
ax+by=c
get all x and y on one side
first distribute
-1(x-y)=-x+y
now weh have
8-x+y=-3x+5
add 3x to both sides
8+2x+y=5
minus 8 from both sides
2x+y=-3
1.76
Subtract 2.5 to 3/4 by dividing 3 to 4 getting the answer of 1.76