15 - 5(x + 2) George solved the equation for x,
Which property did he use in Step 1?
Step 1:
15 = 5x + 10
Step 2: 15+ -10 -5x + 10 - 10
Step 3:
5 - 5x
Step 4:
5 + 5 = (5x) 4 5
Step 5
1 = x

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte