Respuesta :

choixongdong

x - 3/7 = 4

Multiply both sides by 7

7x - 3 = 28

Add 3 to both sides

7x = 31

Divided both sides by 7

x = 31/7

Answer

x = 31/7

Supernova

x - 3/7 = 4

  • Add 3/7 to both sides.

x = 4 + 3/7

  • Let's make 4 (4/1) have a common denominator with 3/7 by multiplying 4 by 7/7.
  • 4/1 * 7/7 = 28/7
  • Now add 28/7 and 3/7.
  • 28/7 + 3/7 = 31/7

x = 31/7; simplified into a mixed number is 4 3/7.

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