What is the common denominator of 14, 7, and 5?

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

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

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer