NEED HELP ASAP find the error and explain why it is wrong. megan solved the following problem. what did she do wrong?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Analyze the solution below. 7 3 x = −2 7 3 x(3 7 ) = −2(3 7 ) x = − 6 7 what property was used to solve the equation? property of opposites division property of equality addition property of equality multiplication property of equality

Acontainer full of water weighs 15.5 lbs. when ¼ of the water is poured out, the container now weighs 12 ½ lbs. how much does the container weigh when empty?