Solve a 2 step linear equation algebraically. Show all work and all steps. 1.) 5x+3=23

2.) 42=18-4x

1. x = 4

2. x = -6

Step-by-step explanation:

1. 5x + 3 = 23     subtract 3 from both sides

        - 3    -3

   5x   =   20            divide 5 from both sides

5                5

x = 4

2. 42 = 18 - 4x     subtract 18 to both sides

    - 18  - 18

24  = 4x            divide 4 from both sides

4           4

x = 6

f(x) = y

f(-3) = -5

step-by-step explanation: