shae1471 shae1471
  • 22-10-2020
  • Mathematics
contestada

Solve for x. Justify each step. Given: 4x-9=99

Respuesta :

marlynn2002
marlynn2002 marlynn2002
  • 22-10-2020

Answer:

4x-9=99

1. Move -9 to the side with 99 and change the sign

4x=99+9

2. Sum

4x=108

3. Divide 4x by 4 to leave the X alone. Do the same on the other side.

4x/4=108/4

4. Complete the division

x=27

Verification:

4(27)-9=99

108-9=99

99=99 (TRUE)

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