Solve the system by the substitution method y=-2x-4 5x-2y=-1

Answer 1

It would help to have at least a comma to set the two equations apart.

y=-2x-4

5x-2y=-1

Substitute -2x-4 for y in second equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.