Respuesta :

Answer:

  1. 4 + 3x = 19; x = 5
  2. 2x + 7 = 9; x = 1
  3. x/3 - 10 = 6; x = 48
  4. 5(4 + x) = -15; x = -7

Step-by-step explanation:

For #1:

[tex]4 + 3x = 19\\3x = 15\\x = 5[/tex]

For #2:

[tex]2x + 7 = 9\\2x = 2\\x = 1[/tex]

For #3:

[tex]\frac{x}{3} - 10 = 6\\ \\\frac{x}{3} = 16\\\\x = 48[/tex]

For #4:

[tex]5(4 + x) = -15\\20 + 5x = -15\\5x = -35\\x = -7[/tex]

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