Question

Identify the missing justifications.

Angle PQR = x + 7, angle SQR = x + 3, and angle PQR + angle SQR = angle PQS = 100

I'll draw the angle/diagram in the comments.

Angle PQR + angle SQR = angle PQS
x + 7 + x + 3 = 100 Substitution Property
2x + 10 = 100 Simplify
2x = 90
x = 45 Division Property of Equality

They want me to state what the Angle PQR + angle SQR = angle PQS is as well as the 2x = 90
oAngle Addition Postulate; Addition Property of Equality
oAngle Addition Postulate; Subtraction Property of Equality
oProtractor Postulate; Addition Property of Equality

Answer 1

The last possible answer is Protractor Postulate; Subtraction Property of Equality.