Question

1: -2n + 6= 4n - 12

2: 8y + 5= 4y - 15

3: 3b + 5= -10

4: -2z= -10

5: 3x= -12

6: 2p -5= -3p + 15

7: m + 5= -2

8: x - 3= 5

Answer 1

1: -2n + 6= 4n - 12

  6+12=4n+2n

      18=  6n

      18 :6= n

         3=n

2: 8y + 5= 4y - 15

2: 8y - 4y =   - 15 -5

1/4y+4y=-20

    17/4y =-20

        y= -20:17/4

        Y= -4,7

3: 3b + 5= -10

  b=-10-5

  B=-15

4: -2z= -10  

   -2Z=-10X4

    Z= -40: - 2

     Z=+20    

5: 3x= -12

   3X= -12.5

     X=-60:3

    X = -20

6: 2p -5= -3p + 15

   3/2P= -3P+15+5

  3/2p+3P=20

     9/2 P=20

       P= 20:9/2

       P=40/9

7: m + 5= -2

7: m = -2-5

   7=-7m

   7:-7= m

     -1 =m

8: x - 3= 5

8: x  = 5 +3

 8=8.x

 8:8=x

  1= x