Question

solve the following equations and check your answers
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Answer 1

Answer:

5x - 2 = 18

5x =18+2

5x =20

X=4

1/4y +1/2=5

1/4y =5-1/2

1/4y = 10/2- 1/2

1/4y = 9/2

Y = 9/2 x 4

y = 18

3/5 x - 6 =3

3/5 x =3+6

3/5x =9

x =9 x 5/3

x = 15

Answer 2

Answer:

1. 5x - 2 = 18

ans. or, 5x = 18 + 2

       or, 5x = 20

       or, x = 20/5

       or, x = 4 (answer)

2. 1/4y + 1/2 = 4

ans. or, 1/4y = 4 - 1/2

       or, 1/4y = 3 1/2 or 7/2

       or, 1/4 x 4y = 7/2 x 4

       or, 1y = 28/2

       or, x = 14 (answer)

3. 3/5x - 6 = 3

ans. or, 3/5x = 3 + 6

       or, 3/5x = 9

       or, 3/5 x 5x = 9 x 5

       or, 3x = 45

       or, x = 45/3

       or, x = 15 (answer)

4. 3x + 1/5 = 2 - x

ans. or, 3x + x = 2 - 1/5

       or, 4x = 9/5

      or, x = 9/5/4

      or, x = 9/5 x 1/4

      or, x = 9/20 (answer)

5. 8x + 5 = 6x - 5

ans. or, 8x - 6x = -5 - 5

       or, 2x = -10

       or, x = -10/2

       or, x = -5 (answer)

6. 9z - 13 = 11z + 27

ans. or, 9z - 11z = 27 + 13

       or, -2x = 40

       or, x = 40/-2

       or, x = -20 (answer)