Answer:
ok i will do that
Step-by-step explanation:
unequal Triangle
If two sides of a triangle are unequal, The angle opposite to the greater side is greater than the angle opposite to less.That is,
In a triangle ΔABC,
if AC > AB then ∠B > ∠C
Answer: The correr solution is 
Step-by-step explanation:
Since the steps in Lin's solution are not shown, we are not able to find her erros. However, we can solve it step by step and find the correct result:

Firstly, in the left part of the equation we have to multiply
by the numbers inside the parenthesis; and in the right side we have to solve first what is inside the parenthesis:

Adding similar terms in the left side and multiplying
by the number inside the parenthesis in the right side:

Isolating
:
This is the correct solution