7x(x+y)-(x+y)Factor x+y out of 7x(x+y).(x+y)(7x)-(x+y)Factor x+y out of -(x+y).(x+y)(7x)+(x+y)⋅-1Factor x+y out of (x+y)(7x)+(x+y)⋅-1.(x+y)(7x-1) Factor 7x(x+y)-(x+y)