Question

Dau coroana rapid pliz​

Answer 1

Răspuns:

..a) x-30°+x =180°

2x=180°-30°=150°

x=150°÷2=75°

b) x-42°+x =180°

2x=180°+42°=222°

x= 222°÷2=111°

c) x+3x/5=180°

5x/5+3x/5=180°

8x/5=180°

x= 180°×5/8=112,5°

d)x+24°+x=90°

2x=90°-24°=66°

x= 66°÷2=33°

e) x+x-3=90°

2x =90°+3°=93°

x= 93°÷2=46,5°