A) In this question two angles are given equal and in next step both sides are multiplied by 5 and the result of both sides is equal to each other. The property used is
"When equal are multiplied by equL number then the result is also equal" the equality property is of multiplication.
B) In this question
is given
And then
Here number 3 is subtaracted from both the sides to make
equal to 2.
The property of equality used is " If equal are subtracted from equal the result will be equal"
Here the equality property of subtraction is uaed.