1.5 Notes: Solve the equation

y-4= 9 +4 +4 y= 13

1. y-4= 9

3y-x= 9 +x +x 3y= 9+x 3y/3= 9+x/3 y= 3+ x/3

10. Solve for y. 3y-x= 9

2x-2y= 5 +2x +2x -2y= -2x+5 -2y/-2= -2x+5/-2 y= x - 5/2

11. Solve for y. 2x-2y= 5

20= 8x+4y -8x -8x 20-8x= 4y 20-8x/4= 4y/4 5-2x= y

12. Solve for y. 20= 8x+4y

y= x

13. Solve for x. y= 5x-4x

m= x(2+k) m/2+k= x(2+k)/2+k m/2+k= x

14. Solve for x. 2x+kx= m

3+5x-kx= y -3 -3 5x-kx= y-3 x(5-k)= y-3 x(5-k)/(5-k)= y-3/5-k x= y-3/5-k

15. Solve for x. 3+5x-kx= y

p+5= -6 -5 -5 p= -11

2. p+5= -6

6h= 18 6h/6= 18/6 h= 3

3. 6h= 18

x/-2= 5 x/-2×-2= 5×-2 x= -10

4. x/-2= 5

4-u= 2 -4 -4 u= 2

5. 4-u= 2

-y= 2.3 -y/-1= 2.3/-1 y= -2.3

6. -y= 2.3

3y+4x= 9 -4x -4x 3y= 9-4x 3y/3= 9-4x/3 Y= 3-4x/3

7. 3y+4x= 9

y= 3x+5xz y= x(3+5z) y/3+5z= x(3+5z)/3+5z y/3+5z= x

8. Solve for x. y= 3x+5xz

2x+4y= 11 -2x -2x 4y= -2x+11 4y/4= -2x+11/4 y= -x/2 - 11/4

9. Solve for y. 2x+4y= 11