Question

please give me the sum fast ​

Answer 1

Answer:

i)x+2x=180°

3x=180°

x=180°/3

x=60°

ii)2x+3x=90°

5x=90°

x=90°/5

x=18°

iii)x+2x+3x+4x=360°

10x=360°

x=360°/10

x=36°

iv)(3x-5°)+(x+20°)+(65°)=180°

3x-5°+x+20°+65°=180°

3x+x-5°+20°+65°=180°

4x+80°=180°

4x=180°-80°

4x=100°

x=100°/4

x=25°

v)x+45°=90°

x=90°-45°

x=45°