Which of the following has one solution? Select all that apply. 2(4+x)=8+2x2 times open paren 4 plus x close paren is equal to 8 plus 2 x

2(6+x)=14+2x2 times open paren 6 plus x close paren is equal to 14 plus 2 x

5x−10=x+205 x minus 10 is equal to x plus 20

10x+5=3(5x+7)

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