Question

Ayudaaaa porfaaaa .. es para mañana

Answer 1

D.
1. 2x + 9 = 37

2.  x/2 +4 =12

3.  x - 15 = 75

4. 3 * a = 42

5. 3b + 8 = 29

E.
1. x+ 2x = 45
         3x = 45
           x = 45/3
           x = 15

Comprobación

       x + 2x = 45
15 + 2* 15 = 45
    15 + 30 = 45
            45 = 45  

2. a + 3a = 384
          4a = 384
            a = 384 /4
            a = 96

comprobación 

       a + 3a = 384
96 + 3 * 96 = 384
   96 + 288 = 384
           384 = 384

3.  5 * a + 6 = 46
            5* a = 46 - 6
            5* a = 40
                a = 40 /5
                a = 8

comprobación

  5*a + 6 = 46
5 * 8 + 6 = 46
   40 + 6 = 46
         46 = 46

4. (x + 14) * 11 = 220
             x + 14  = 220 / 11
              x + 14 = 20
                      x = 20 - 14
                      x = 6

comprobación
  (x + 14) * 11 = 220
  (6 + 14) * 11 = 220 
           20 * 11 = 220
                220 = 220