Question

calculate the missing value by applying appropriate properties and the mention the property you applied​

Answer 1

a)3x+15=4x-5(vertically opposite angles are equal)

4x-3x=15+5

x=20.

b)25⁰+90⁰+105⁰+?=360⁰(complete angle =360⁰)

?=360-220

?=140⁰

c)x⁰+3x⁰+2x⁰=180⁰(supplementary angles are 180⁰)

6x⁰=180⁰

x=30⁰