Solve for x: 5x + 7 = 4x + 2

x = -5

Step-by-step explanation:

5x + 7 = 4x + 2 (subtract 4x on both sides)

x + 7 = 2 (subtract 7 on both sides)

x = -5

PLUG IN

5(-5) + 7 = 4(-5) + 2

-25 + 7 = -20 + 2

-18 = -18

Hope this helps ya!

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v