ԼA+LB+LC=180

Ա)LA=30

Բ)LA=105

LC=60

LB=45

LA-LB-LC

180-105-45=30

2)LA=LB+40

LC=LB+20

LA+LB+LC=180

LB+40+LB+20=180

3LB+60=180

3LB=120

LB=120÷3=40

LA=40+40=80

LC=40+20=60

3)LC=LB-20

LB=2×LA

LA=x

LB=2X

LC=LB-20=2x-20

LA=Lb+LC=x+2x+2x-20=5x-20=180

5x=200x

x=40

LA=40

LB-2×40=80

LC+80-20=60

ստ.LA+LB+Lc=40+80+60=180

4)LA÷LB÷LC=1÷2÷3

LA-LB-LC=?

LA=x

LB=2x

LC=3x

x+2x+3x=180

6x=180

x=30

2x=60

3x=90

LA=30

LB=60

LC=90