djdhdnbddn djdhdnbddn 19-09-2022 Mathematics Answered Write and solve an equation for the situation. 4. The sum of 7 and u is 14. (1 point) 7+u = 14; u = 7 14+7=u: u = 21 7+u = 14: u = 8 7+14=u: u = 21