Question

unul dintre ele repede,vă roggg​

Answer 1

6) notam : x= <1 : y=<2

a) x=3y

x+y= 180 grade

3y+y= 180

4y=180

y=180:4= 45 grade

x= 3x45= 135 grade

b) y=4x

x+4x=180

5x=180

x=180:5= 36

y= 4x36= 144 grade.