Question

solve (1) 3x+12=24 (2) 6y-9=2y+15 (3) 18-5y=3y-6​

Answer 1

(1)

$3x + 12 = 24$

$3x = 24 - 12$

$3x = 12$

$x = 12 \div 3$

$x = 4$

(2)

$6y - 9 = 2y + 15 \\ 6y - 2y = 15 + 9 \\ 4y = 24 \\ y = 24 \div 4 \\ y = 6$

(3)

$18 - 5y = 3y - 6 \\ 18 + 6 = 3y + 5y \\ 24 = 8y \\ y = 24 \div 8 \\ y = 3$

Answer 2

Answer:

(1) 3x+12=24

    3x=24-12

        =12

      x=12/3

        =4 is the answer

(2) 6y-9=2y+15

     6y-2y=15+9

      4y = 24

        y = 24/4

           = 6 is the answer

(3) 18-5y=3y-6

      18+6=3y+5y

       24=8y

        y=24/8

          =3 is the answer