What is

5 (2y+4) - 11=139

10y + 20 - 11 = 139

10y = 130

y = 130 / 10

y = 13

Step-by-step explanation:

5 (2y + 4) - 11 = 139

5*2y + 5*4 - 11 = 139

10y + 20 - 11 = 139

10y + 9 = 139 {subtract 9 form both sides}

10y + 9 - 9 = 139 - 9

10y = 130 {Divide both sides by 10}

10y/10 = 130/10

y = 13