Which of the following angle relationships are correct?

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Ac contractor is building a new subdivision outside of the city. he has started work on the first street and is planning on the other streets to run in a direction parallel to the first. the second street will pass through (-2,4) find the equation of the location of the second street in standard form. a.2x+y=2 b. x-y=2 c.2x+y=2 d.x+y=2

How to solve a simultaneous equation involved with fractions?