Whats the answer for this

To start to solve the system of equations below, which number would you multiply in the equation -2x-5y=-1? the two equations are -2x-5y=-1 and 4x+2y=8

95/10 minus 1/23 i need the answer in a fraction and i need work.

There were 32 volunteers to donate blood. unfortunately, nn of the volunteers did not meet the health requirements, so they couldn't donate. the rest of the volunteers donated 470 milliliters each.