Respuesta :

ac180594

Answer:

x=20

Step-by-step explanation:

  1. 15+3x=75
  2. 3x+15=75
  3. 3x+15+15=75+15
  4. 3x=60
  5. [tex]\frac{3x}{3} =\frac{60}{3}[/tex]
  6. x=20

I hope this explanation was helpful.

Step-by-step explanation:

soln,

15+3x=75

or, 3×15=75

or,3×15+15=75+15

or,3x÷3=60÷3

or,x=20

ans= 20

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